Select the number that can replace the question mark (?) in the following series.
65, 70, 80, 95, 115, ?, 170
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e 140
| Understanding |
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In the given series the next number is formed: Next number = Previous number + next consecutive multiple of 5 First number = 65, Fiirst multiple of 5 = 5 70 = 65 + 5 80 = 70 + 10 95 = 80 + 15 115 = 95 + 20 Next multiple of 5 = 25 Number replacing '?' = 115 + 25 = 140 |