Elitmus Exam Logical Reasoning Cryptography

Plz tel me which book i have to refer for di in elitmus exam....

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Elitmus Other Question

John draws a card from a pack of cards. What is the probability that the card drawn is a card of black suit?

Options
1) 1/2
2) 1/4
3) 1/3
4) 1/13
My percentile in elitmus are as follows, should I re-attempt the test?
verbal 55.78 %
problem solving 72.08
quant 66.47

my 10th strandard percentage is 89%
12th is 76.2 %
b.tech is 70.25 % (computer science)