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In a race between A,B,C and D. A said I am not 1st or 4th, B said I am not 4th, C said I am not 1st, D said I am 4th. If only three of them said truth then who is 4th in that race?

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TCS Other Question

How many 4 digit numbers can be made by using digits 1 to7(repetition is not allowed),if the digit 4 will always be there in the number?

a. 400
b. 480
c. 360
d. 240
e. None of these
6^17+17^6=?