Select the number from among the given options that can replace the question mark (?) in the following series.
10, 22, 35, 40, 72, 40, ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 133
| Understanding | Application |
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22 - 10 = 12 35 - 22 = 13 40 - 35 = 5 72 - 40 = 32 40 - 72 = -32 Now, 13 - 12 = (1)3 5 - 13 = -8 = (-2)3 32 - 5 = 27 = (3)3 -32 - 32 = -64 = (-4)3
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Following the same pattern, 133 - 40 = 93 Now, 93 - (-32) = 93 + 32 = 125 125 = (5)3 Hence, the missing number is 133 |