There are $10$ buses operating between places $A$ and $B$ . The number of ways a person can go from place $A$ to place $B$ and return to place $A$ , if he returns in a different bus?

90

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100

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19

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20

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Solution

The correct option is B $90$
there are $10$ buses from A to B
similarly he can come back by $10$ ways
total ways $= 10 \times 10 = 100$

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There are 10 buses operating between places A and B. The number of ways a person can go from place A to place B and return to place A, if he returns in a different bus?

The correct option is B 90there are10buses from A to B similarly he can come back by 10 waystotal ways=10×10=100

There are $10$ buses operating between places $A$ and $B$ . The number of ways a person can go from place $A$ to place $B$ and return to place $A$ , if he returns in a different bus?

The correct option is B $90$
there are $10$ buses from A to B
similarly he can come back by $10$ ways
total ways $= 10 \times 10 = 100$