BANK IBPS RRB PO Mock Test Series 2025 (Pre + Mains) Quantitative Aptitude Average

Average of 4 numbers is 15. Fourth number is twice of second number and first number is 1 less than second number and third number is 1 more than the second number. Find the second number.

1
16
2
11
3
12
4
24
5
10
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