Number System If (47)² is added to the square of a number the answer thus obtained is 2290. What is the number ? 10 8 9 7 10 8 9 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, x² + (47)² = 2290Therefore, x² = 2290 - 2209 = 81Therefore, x = 9
Number System If the difference between a number and its three fifths is 62, what is the number ? 165 175 145 155 165 175 145 155 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x - 3x/5 = 62or x = 62 x 5/2 = 155
Number System By how much is 3/5th of 875 greater than 2/3 of 333? 303 233 362 199 303 233 362 199 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/5th of 875 is greater than 2/3rd of 333= 3/5 * 875 - 2/3 * 333= 525 - 222 = 303.
Number System Let R = qs—4. When s=8, R=16. When s=10, R is equal to 23 21 20 22 23 21 20 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
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 60 58 54 56 60 58 54 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 (444 x 44 x 4) ÷ 40 ? 2153.6 1853.6 2053.6 1953.6 2153.6 1853.6 2053.6 1953.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 444 x 44 x 4/40 = 1953.6
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