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REASONING
1, 49, 121, ?, 289...

1, 49, 121, ?, 289

A

529

B

169

C

329

D

225

लिखित उत्तर

Verified by Experts

The correct Answer is:
B
`(1)^2=1,`
`1+6=7rArr(7)^2=49,`
`7+4=11rArr(11)^2=121,`
`11+2=13rArr(13)^2=169,`
`13+4=17rArr(17)^2=289,`
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