**Questions
and Answers**

**What is composite number?
Define with examples.**

**Answer:** The definition of composite number: "A number which has more
than two factors is called a composite number." Or, a number having more factors
other than 1 and the number itself is called a composite number.

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For example:

4 has a factor 2 other than 1 and 4, so 4 is a composite number.

6 has factors 2 and 3 other than 1 and 6, so 6 is a composite
number.

8 has factors 2 and 4 other than 1 and 8, so 8 is a composite
number.

9 has a factor 3 other than 1 and 3, so 9 is a composite number.

10 has factors 2 and 5 other than 1 and 10, so 10 is a composite
number.

12 has factors 2, 3, 4, and 6 other than 1 and 12, so 12 is a
composite number.

14 has factors 2 and 7 other than 1 and 14, so 14 is a composite
number.

15 has factors 3 and 5 other than 1 and 15, so 15 is a composite
number.

etc.

**What is the meaning of
composite number?**

**Answer:** The meaning of composite number is such a number which can be
resolved into the factors of two or more numbers other than 1 and the
number itself.

For example, 20 can be resolved into the factors 2 × 2 × 5 other
than 1 × 20. So, 20 is a composite number. But, 23 can not be resolved into the
factors other than 1 × 23, so 23 is not a composite number.

So, the numbers having more than two factors are composite
numbers.

**What is the smallest
composite number?**

**Answer:** The smallest composite number is 4.

**What is the smallest odd
composite number?**

**Answer:** The smallest odd composite number is 9.

**What is the smallest two
digit composite number?**

**Answer:** The smallest two digit composite number is 10.

**What is the largest 2
digit composite number?**

**Answer:** The largest 2 digit composite number is 99.

**Is 0 a composite number?**

**Answer:** No, 0 is neither composite nor a prime number.

**Is 1 a composite number?**

**Answer:** No, 1 is neither composite nor a prime number.

**Is 2 a composite number?**

**Answer:** No, 2 is not a composite number.

**Is 3 a composite number?**

**Answer:** No, 3 is not a composite number.

**Is 4 a composite number?**

**Answer:** Yes, 4 is a composite number.

**Is 5 a composite number?**

**Answer:** No, 5 is a not composite number.

**Is 6 a composite number?**

**Answer:** Yes, 6 is a composite number.

**Is 7 a composite number?**

**Answer:** No, 7 is a not composite number.

**Is 8 a composite number?**

**Answer:** Yes, 8 is a composite number.

**Is 9 a composite number?**

**Answer:** Yes, 9 is a composite number.

**Is 10 a composite number?**

**Answer:** Yes, 10 is a composite number.

**Is 11 a composite number?**

**Answer:** No, 11 is not a composite number.

**Is 12 a composite number?**

**Answer:** Yes, 12 is a composite number.

**Is 13 a composite number?**

**Answer:** No, 13 is not a composite number.

**Is 15 a composite number?**

**Answer:** Yes, 15 is a composite number.

**Is 17 a composite number?**

**Answer:** No, 17 is not a composite number.

**Is 19 a composite number?**

**Answer:** No, 19 is not a composite number.

**Is 21 a composite number?**

**Answer:** Yes, 21 is a composite number.

**Is 23 a composite number?**

**Answer:** No, 23 is not a composite number.

**Is 25 a composite number?**

**Answer:** Yes, 25 is a composite number.

**Is 27 a composite number?**

**Answer:** Yes, 27 is a composite number.

**Is 29 a composite number?**

**Answer:** No, 29 is not a composite number.

**Is 31 a composite number?**

**Answer:** No, 31 is not a composite number.

**Is 33 a composite number?**

**Answer:** Yes, 33 is a composite number.

**Is 35 a composite number?**

**Answer:** Yes, 35 is a composite number.

**Is 37 a composite number?**

**Answer:** No, 37 is not a composite number.

**Is 39 a composite number?**

**Answer:** Yes, 39 is a composite number.

**Is 41 a composite number?**

**Answer:** No, 41 is not a composite number.

**Is 43 a composite number?**

**Answer:** No, 43 is a not composite number.

**Is 45 a composite number?**

**Answer:** Yes, 45 is a composite number.

**Is 47 a composite number?**

**Answer:** No, 47 is a composite number.

**Is 49 a composite number?**

**Answer:** Yes, 49 is a composite number.

**Is 51 a composite number?**

**Answer:** Yes, 51 is a composite number.

**Is 57 a composite number?**

**Answer:** Yes, 57 is a composite number.

**Is 61 a composite number?**

**Answer:** No, 61 is a not composite number.

**Is 65 a composite number?**

**Answer:** Yes, 65 is a composite number.

**Is 71 a composite number?**

**Answer:** No, 71 is not a composite number.

**Is 81 a composite number?**

**Answer:** Yes, 81 is a composite number.

**Is 91 a composite number?**

**Answer:** Yes, 91 is a composite number.

**Is 93 a composite number?**

**Answer:** Yes, 93 is a composite number.

**Is 100 a composite number?**

**Answer:** Yes, 10 is a composite number.

**Are all even numbers
composite?**

**Answer:** Except 2, all even numbers are composite.

**List the composite
numbers less than 20.**

**Answer:** The composite numbers less than 20 are: 4, 6, 8, 9, 10, 12, 14,
15, 16, and 18.

**List the composite
numbers from 1 to 50.**

**Answer:** The composite numbers from 1 to 50 are: 4, 6, 8, 9, 10, 12, 14,
15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40,
42, 44, 45, 46, 48, 49, and 50.

**List the composite
numbers from 1 to 100.**

**Answer:** The composite numbers from 1 to 100 are: 4, 6, 8, 9, 10, 12,
14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39,
40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 58, 60, 62, 63, 64, 65, 66,
68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92,
93, 94, 95, 96, 98, 99, and 100.

**List the composite
numbers from 1 to 1000.**

**Answer:** Here is the composite numbers list from 1 to 1000:

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27,
28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54,
55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80,
81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100, 102, 104,
105, 106, 108, 110, 111, 112, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123,
124, 125, 126, 128, 129, 130, 132, 133, 134, 135, 136, 138, 140, 141, 142, 143,
144, 145, 146, 147, 148, 150, 152, 153, 154, 155, 156, 158, 159, 160, 161, 162,
164, 165, 166, 168, 169, 170, 171, 172, 174, 175, 176, 177, 178, 180, 182, 183,
184, 185, 186, 187, 188, 189, 190, 192, 194, 195, 196, 198, 200, 201, 202, 203,
204, 205, 206, 207, 208, 209, 210, 212, 213, 214, 215, 216, 217, 218, 219, 220,
221, 222, 224, 225, 226, 228, 230, 231, 232, 234, 235, 236, 237, 238, 240, 242,
243, 244, 245, 246, 247, 248, 249, 250, 252, 253, 254, 255, 256, 258, 259, 260,
261, 262, 264, 265, 266, 267, 268, 270, 272, 273, 274, 275, 276, 278, 279, 280,
282, 284, 285, 286, 287, 288, 289, 290, 291, 292, 294, 295, 296, 297, 298, 299,
300, 301, 302, 303, 304, 305, 306, 308, 309, 310, 312, 314, 315, 316, 318, 319,
320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 332, 333, 334, 335, 336,
338, 339, 340, 341, 342, 343, 344, 345, 346, 348, 350, 351, 352, 354, 355, 356,
357, 358, 360, 361, 362, 363, 364, 365, 366, 368, 369, 370, 371, 372, 374, 375,
376, 377, 378, 380, 381, 382, 384, 385, 386, 387, 388, 390, 391, 392, 393, 394,
395, 396, 398, 399, 400, 402, 403, 404, 405, 406, 407, 408, 410, 411, 412, 413,
414, 415, 416, 417, 418, 420, 422, 423, 424, 425, 426, 427, 428, 429, 430, 432,
434, 435, 436, 437, 438, 440, 441, 442, 444, 445, 446, 447, 448, 450, 451, 452,
453, 454, 455, 456, 458, 459, 460, 462, 464, 465, 466, 468, 469, 470, 471, 472,
473, 474, 475, 476, 477, 478, 480, 481, 482, 483, 484, 485, 486, 488, 489, 490,
492, 493, 494, 495, 496, 497, 498, 500, 501, 502, 504, 505, 506, 507, 508, 510,
511, 512, 513, 514, 515, 516, 517, 518, 519, 520, 522, 524, 525, 526, 527, 528,
529, 530, 531, 532, 533, 534, 535, 536, 537, 538, 539, 540, 542, 543, 544, 545,
546, 548, 549, 550, 551, 552, 553, 554, 555, 556, 558, 559, 560, 561, 562, 564,
565, 566, 567, 568, 570, 572, 573, 574, 575, 576, 578, 579, 580, 581, 582, 583,
584, 585, 586, 588, 589, 590, 591, 592, 594, 595, 596, 597, 598, 600, 602, 603,
604, 605, 606, 608, 609, 610, 611, 612, 614, 615, 616, 618, 620, 621, 622, 623,
624, 625, 626, 627, 628, 629, 630, 632, 633, 634, 635, 636, 637, 638, 639, 640,
642, 644, 645, 646, 648, 649, 650, 651, 652, 654, 655, 656, 657, 658, 660, 662,
663, 664, 665, 666, 667, 668, 669, 670, 671, 672, 674, 675, 676, 678, 679, 680,
681, 682, 684, 685, 686, 687, 688, 689, 690, 692, 693, 694, 695, 696, 697, 698,
699, 700, 702, 703, 704, 705, 706, 707, 708, 710, 711, 712, 713, 714, 715, 716,
717, 718, 720, 721, 722, 723, 724, 725, 726, 728, 729, 730, 731, 732, 734, 735,
736, 737, 738, 740, 741, 742, 744, 745, 746, 747, 748, 749, 750, 752, 753, 754,
755, 756, 758, 759, 760, 762, 763, 764, 765, 766, 767, 768, 770, 771, 772, 774,
775, 776, 777, 778, 779, 780, 781, 782, 783, 784, 785, 786, 788, 789, 790, 791,
792, 793, 794, 795, 796, 798, 799, 800, 801, 802, 803, 804, 805, 806, 807, 808,
810, 812, 813, 814, 815, 816, 817, 818, 819, 820, 822, 824, 825, 826, 828, 830,
831, 832, 833, 834, 835, 836, 837, 838, 840, 841, 842, 843, 844, 845, 846, 847,
848, 849, 850, 851, 852, 854, 855, 856, 858, 860, 861, 862, 864, 865, 866, 867,
868, 869, 870, 871, 872, 873, 874, 875, 876, 878, 879, 880, 882, 884, 885, 886,
888, 889, 890, 891, 892, 893, 894, 895, 896, 897, 898, 899, 900, 901, 902, 903,
904, 905, 906, 908, 909, 910, 912, 913, 914, 915, 916, 917, 918, 920, 921, 922,
923, 924, 925, 926, 927, 928, 930, 931, 932, 933, 934, 935, 936, 938, 939, 940,
942, 943, 944, 945, 946, 948, 949, 950, 951, 952, 954, 955, 956, 957, 958, 959,
960, 961, 962, 963, 964, 965, 966, 968, 969, 970, 972, 973, 974, 975, 976, 978,
979, 980, 981, 982, 984, 985, 986, 987, 988, 989, 990, 992, 993, 994, 995, 996,
998, 999, and 1000.

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