Question

Series: 3150, 900, 360, 450, 480.

Wrong term of the series is A then which statement is false about A/15?

I: It is a perfect square.

II: The difference between the digits is divisible by 5.

III: Sum of its digits is less than 5.

1. Only III
2. Only II
3. Only I
4. All I, II and IIII
5. Both I and II

Answer 1

Correct Answer - Option 5 : Both I and II

Given:

Series: 3150, 900, 360, 450, 480.

Calculation:

⇒ 3150 ÷ 3.5 = 900

⇒ 900 ÷ 2.5 = 360

⇒ 360 ÷ 1.5 = 240 ≠ 450

⇒ 240 ÷ 0.5 = 480

450 is the wrong term in the series.

Option I states that -

⇒ 450/15 = 30 which is not perfect square.

Option II states that -

⇒ 450/15 = 30, (3 -0 = 3) is not divisible by 5.

Option III states that -

⇒ 450/15 = 30, (3 + 0 = 3) is less than 5.

From above, options I and II are false.