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Complete the series. 3, 5, 13, 49, (…)
Question

Complete the series.
3, 5, 13, 49, (…)

A.

241

B.

248

C.

253

D.

269

Correct option is A


logic: multiply by 2 - 1, multiply by 3 - 2, and so on.
Given series: 3, 5, 13, 49, (…)
Starting with 3:
Multiply by 2 and subtract 1:
3×2−1=6−1=5
Next, starting with 5:
Multiply by 3 and subtract 2:
5×3−2=15−2=13
Next, starting with 13:
Multiply by 4 and subtract 3:
13×4−3=52−3=49
Next, starting with 49:
Multiply by 5 and subtract 4:
49×5−4=245−4=241
Thus, the next number in the series is 241.
Correct answer is (a) 241.

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