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Permutation: n Different Things Taken All at a Time When All Are Not Different.

Choose or fin...

Question

Choose or find odd number pair
$(24 - 21), (46 - 32), (62 - 23), (84 - 24)$

A

24 - 21

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B

46 - 32

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C

62 - 23

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D

84 - 24

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Solution

The correct option is A $62 - 23$
In all other pairs,the first number is obtained by multiplying the second number by $2$ and then reversing the digits of the number so obtained.

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Permutation: n Different Things Taken All at a Time When All Are Not Different.

Standard XII Mathematics

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