MBA Exam

a drawer holds 4 red hats and 4 blue hats,what is the probability of getting exactly 3 red hats or 3 blue hats when taking out 4 hats randomly out of the drawer and immediately returning every hat to drawer before taking out next hat

1) 1/2
2) 1/8
3) 3/8
4) 1/4

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MBA Other Question
In a number system the product of 51 and 22 is 1452. The number 1231 in this number system when converted to decimal system becomes

1) 463
2) 505
3) 469
4) 511
 Twinkle tellsRaveena that she has got 3 kids and 2 of these kids are twins, andalso that their ages are all integers. She tells Raveena the sum of theages of her kids and also the product of their ages. Raveena says thatshe has insuficient information to determine the ages, but onepossibility is that the twins are a prime number of years old. IfTwinkle’s twins are teenagers and their age is not prime, then the sumof the ages of her kids is

1) A prime number
2) Is greater than 43
3) A composite number
4) Exactly 2 of the foregoing
5) Still undeterminable