Number System (1024—263—233)÷(986—764— 156) =? 6 10 8 None of these 6 10 8 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1092 1192 1200 1082 1092 1192 1200 1082 ANSWER DOWNLOAD EXAMIANS APP
Number System Two third of three- fifth of one fourth of a number is 24, what is 30% of that number? 72 69 42 90 72 69 42 90 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 2/3 * 3/5 * 1/4 = 24x = 240240 * 30/100 = 72
Number System The product of two consecutive odd numbers is 4623. What is the product of the next two consecutive odd numbers ? 7745 5183 6782 8795 7745 5183 6782 8795 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √4623 = 6767 x 69 = 4623∴ Required product = 71 x 73 = 5183
Number System In how many ways can 5 boys be chosen from 6 boys and 4 girls so as to include exactly one girl ? 60 54 56 58 60 54 56 58 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP One girl can be chosen in 4C1 = 4 ways and 4 boys can be chosen in 6C4 = 15 ways ∴ Total number of ways = 4 x 15 = 60 ways.
Number System The difference between 35% of a number and 18% of the same number is 93.5 then what is the 40% of that number ? 225 245 232 220 225 245 232 220 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Diff = (35 - 18)% of x = 93.517x/100 = 93.5Therefore, x = 550Therefore, 40% of 550 = 220
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