Test: Be My Multiple, I’ll Be Your Factor - Class 5 MCQ

For 5 to be a factor of 12, you would need to divide 12 by 5:

12 ÷ 5=2.4

Since this division does not result in a whole number, it shows that 5 does not divide 12 evenly. Therefore, 5 is not a factor of 12.

In contrast, factors of 12 are numbers that can divide 12 without leaving a remainder, such as 1, 2, 3, 4, 6, and 12.

Prime numbers between  17 and 41 are 17,19,23,28,31,37,41.

 ∴ p=23,q=37

.  ⇒ q−p=37−23=14

The factors of 256 are 1,2,4,8,16,32,64,128 and 256 which are 9 in number.

The sum of the first five multiples of 8 is 8+16+24+32+40=120

- Start counting by adding 4 to each number, beginning from 0.
- 0 (1st number)
- 4 (2nd number: 0 + 4)
- 8 (3rd number: 4 + 4)
- 12 (4th number: 8 + 4)
- 16 (5th number: 12 + 4)
- 20 (6th number: 16 + 4)

The 6th number is 20, so the correct answer is A: 20.

- We need to determine what number, when multiplied by 7, gives 56.

- To find this number, divide 56 by 7:

- So, the missing factor is 8.

- Therefore, the correct answer is D: 8.

To determine when both Sara and Mike water their plants together, find the common days they both water.

- Sara waters every 3rd day: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30.
- Mike waters every 5th day: 5, 10, 15, 20, 25, 30.

The common days are when both schedules overlap:
- 15th and 30th.

Thus, the correct answer is C: 15th and 30th.