MBA Exam

There is a school were 60% are girls and 35% of the girls are poor.Students are selected at random, what is the probability of selecting a poor girl out of total strength.?plz post method to solve this

1) 21
2) 21/100
3) 7/12
4) none

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MBA Other Question

Question:A solid sphere is cut into 16 identical pieces with 5 cuts. What is the percentage increase in the combined total surface area of all the pieces over that of the original sphere?

1) 350%
2) 150%
3) 200%
4) 250%
Given that: p, q, r are natural nos if p^4 + q^4 = r^4 which of the following
is always correct

1) either p is a prime or q is a prime
2) if p, q is a prime then r is also a prime.
3) p, qandr can never be primes.
4) option 1 and 2
5) option 2 and 3