IBPS Government Jobs Exams Numerical Ability Permutation and Combination

Grace has 16 jellybeans in her pocket. She has 8 red ones, 4 green ones, and 4 blue ones. What is the minimum number of jellybeans she must take
out of her pocket to ensure that she has one of each color?
A. 4
B. 8
C. 12
D. 13
E. 16

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IBPS Other Question
How long will Lucy have to wait before for her $2,500
invested at 6% earns $600 in simple interest?
A. 2 years
B. 3 years
C. 4 years
D. 5 years
E. 6 years If r = 5 z then 15 z = 3 y, then r =
A. y
B. 2 y
C. 5 y
D. 10 y
E. 15 y