Question

2. Which of these numbers have exactly three factors?
(1) 4 (2) 36 (3) 25 (4) 15 (5) 49 (6) 10


3. Choose all the numbers from following numbers that are not multiples of 6.
30, 44, 39, 18, 1, 72, 12, 64, 56, 94, 60, 21, 216, 1082


4. Which of the following numbers are prime?
(1) 5 (2) 7 (3) 8 (4) 9 (5) 24 (6) 29
(7) 35 (8) 39 (9) 28 (10) 61(11) 59(12) 79


5. Which of the following are composite numbers?
(1) 39 (2) 47 (3) 65 (4) 103 (5) 91 (6) 88
(7) 78 (8) 49 (9) 1113 (10) 343 (11) 112 (12) 143


6. Separate even numbers from odd numbers:
17, 28, 32, 39, 47, 89, 90, 93, 96, 109, 112, 1732, 8172,813, 719, 812,602, 515, 608, 554, 214, 413, 314, 517​

Answer 1

Answer:2. 15(1,3,5) and 10(1,2,5).

3. 44,39,1,64,56,94,21,1082.

4. 5,7,29,61,59,79.

5. 39,65,91,88,78,49,1113,343,113,143.

6. Even- 28,32,90,96,112,1732,8172,812,602,608,554,214,314.

Odd- 17,39,47,89,93,109,813,719,515,413,517.

Explanation: