Question

If there are 20 balls and we form groups of 4 balls each, then how many groups can be formed?

• A. 5
• B. 4
• C. 6
• D. 8

Answer 1

The correct option is A 5

Total number of balls = 20
Number of balls in each group = 4
Number of groups formed = ?

Here, we have to divide 20 balls in groups of 4 balls each.
i.e., we have to find the value of 20 ÷ 4.

We know, division is nothing but repeated subtraction.
To find the answer, we need to repeatedly subtract 4 from 20, until we get a zero.

20 − 4 = 16
16 − 4 = 12
12 − 4 = 8
8 − 4 = 4
4 − 4 = 0

Here, the number 4 has been repeatedly subtracted 5 times from 20 to reach zero .
So, 20 ÷ 4 = 5.
Therefore, five groups of 4 balls can be formed.