MBA Exam

How many 5-letter words can be formed using As, Bs, Cs and Ds only, which do not contain the word BAD?

1) 960
2) 976
3) 1024
4) 924

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MBA Other Question

N is a five-digit perfect square whose unit digit is same as the tens digit. How many such N are
there? plz explain!!

1) 30
2) 31
3) 32
4) 33
The sum of 2 natural numbers when added to their LCM gives a total of 143 .How many such paired numbers exist

1) 12
2) 9
3) 8
4) 6