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`(49)^(2)xx (7)^(8)div (343)^(3)=(7)^(?)`
A. 3
B. 11
C. 7
D. 9

1 Answer

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Best answer
Correct Answer - A
`(49)^(2)xx7^(8)div(343)^(3)=7^(?)`
`rArr (7^(2))^(2)xx7^(8)div (7^(3))^(3)=7^(?)`
`rArr 7^(4)xx7^(8)div 7^(9)=7^(?)`
`rArr 7^(4)+8-9=7^(?)`
`rArr 7^(3)=7^(?) rArr ?=3`

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