MBA Exam

A six-digit natural number abcdef becomes defabc upon being multiplied by a natural number. Find the sum of its digits if they are distinct.explain the solution too....

1) 20
2) 24
3) 27
4) 36

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MBA Other Question

IN HOW MANY WAYS CAN 8 DIRECTORS, A CHAIRMAN AND A VICE-CHAIRMAN CAN SIT AROUND A ROUND TABLE SUCH DAT VC ALWAYZ SIT BETWEEN A DIRECTOR AND CHAIRMAN

1) 2*9!
2) 2*8!
3) 2*7!
4) NOT
N=98765432109876543210.....UPTO 1000 DIGITS,Find the smallest natural number n such that N+N is exactly divisible by 11?

1) 6
2) 5
3) 1
4) 10
5) 3