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Number of 4 digit numbers of the form  which satisfy following three conditions

  1. N is a multiple of 5

is equal to  then the value of  is


Question ID - 153653 :-

Number of 4 digit numbers of the form  which satisfy following three conditions

  1. N is a multiple of 5

is equal to  then the value of  is

1 Answer
5876 Votes
3537

Answer Key : (8) -

(8)

First place a can be filled in 2 ways i.e. 4,5,

For  and , total possibilities are ‘6’

i.e. 34,35,36,45,46,56

last place d can be filled in 2 ways i.e. 0,5(  is a multiple of 5)

hence, total numbers  then



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There are 2 women participating in a chess tournament. Every participant played 2 games with the other participants. The number of games that the men played between themselves exceeded by 66 as compared to the number of games that the men played with the women. If the number of participants is  then the value of  is


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