Number System A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is: 24 27 30 22 24 27 30 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27
Number System In how many ways can 5 boys be chosen from 6 boys and 4 girls so as to include exactly one girl ? 56 54 58 60 56 54 58 60 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 When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ? 47 44 45 46 47 44 45 46 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46
Number System If HKUJ means FISH, what does UVCD mean ? STAK STAM STAR STAB STAK STAM STAR STAB ANSWER EXPLANATION DOWNLOAD EXAMIANS APP STAB
Number System The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is: None of these 20 40 30 None of these 20 40 30 ANSWER DOWNLOAD EXAMIANS APP
Number System On dividing number by 5, we get 3 as remainder. What will be the remainder when the square of this number is divided by 5? 1 0 2 4 1 0 2 4 ANSWER DOWNLOAD EXAMIANS APP
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