Question

among the numbers 490 720 840 + 920 BTS divisible by both 5 and 9​

Answer 1

Answer:

720and940willbe divisible by 5and9

mark as brainlest pls

Answer 2

Among the given numbers, the number divisible by both 5 and 9​ is 720.

• A number is divisible by 5 if it has '0' or '5' in its units place.

• A number is divisible by 9 if the sum of digits of the number is divisible by 9.

• Now, let us check the given numbers one by one.

(i) 490 - Has '0' in the units place, hence, divisible by 5.

4 + 9 + 0 = 13 , not divisible by 9.

(ii) 720 - Has '0' in the units place, hence, divisible by 5.

7 + 2 + 0 = 9, divisible by 9.

(iii) 840 - Has '0' in the units place, therefore, divisible by '5'.

8 + 4 + 0 = 12, not divisible by 9.

(iv) 920 - Has '0' in the units place, therefore, divisible by 5.

9 + 2 + 0 = 11, not divisible by 9.

• Therefore, among the given numbers, 720 is the only number which is divisible by both 5 and 9.