Number System What is the sum of the local values of the digits 2, 3, 4, 5 in the number 2345? 2435 5243 2345 2105 2435 5243 2345 2105 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2000 + 300 + 40 + 5 = 2345
Number System If A + B = 30 and AB = 94, What is the value of A² + B² ? 824 625 712 920 824 625 712 920 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94 = 900 - 188 = 712
Number System (2560 x 1.4) +(7400 x 0.6) =? 7234 6543 8024 9160 7234 6543 8024 9160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8024
Number System 8988 / 8 / 4 = ? 4494 561.75 2247 280.875 4494 561.75 2247 280.875 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8988 * 1/8 * 1/4 = 2247/8 = 280.875
Number System In how many ways can 5 boys be chosen from 6 boys and 4 girls so as to include exactly one girl ? 58 56 54 60 58 56 54 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 If 5/7 of a number is 145, what is 180% of that number ? 345.4 375.4 355.4 365.4 345.4 375.4 355.4 365.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 5/7 = 145∴ x = 145 x 7/5 = 203Now, 203 x 180/100 = 365.4
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