Number System {3√4913}² = ? 333 289 225 121 333 289 225 121 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (3√4913)² = (17)² = 289
Number System √343 = ? 21 20 19 18 21 20 19 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √343 = 18
Number System How many numbers up to 100 and 300 are divisible by 11? 18 22 20 21 18 22 20 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (300 – 100)/11 = 200/11 = 18 2/1118 Numbers
Number System In how many different ways can the letters of word 'BIOLOGY' be arranged ? 2410 2678 2367 2520 2410 2678 2367 2520 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In BIOLOGY total 7 letters are there but O comes twice.∴ Number of arrangements = 7!/2! = 2520
Number System 4550 ÷ 25% of ? = 130 125 135 130 140 125 135 130 140 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4550 ÷ ? x 25/100 = 130= 4550 ÷ ?/4 = 130= 4550 x 4/? = 130= ? x 130 = 4550 x 4= ? = 4550 x 4/130 = 140
Number System The sum of a number and its reciprocal is one-eighth of 34. What is the product of the number and its square root? 32 8 None of these 27 32 8 None of these 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,x + 1/x = 34/8 8x2 - 34x + 8 = 0 4x2 - 17x + 4 = 0 (4x - 1)(x - 4) = 0 x = 4required number = 4 * √4 = 4 * 2 = 8.
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