Number System If (74)² is added to the square of a number the answer so obtained is 7780. What is the number ? 48 47 50 49 48 47 50 49 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.or, x² + (74)² = 7780or, x² = 7780 - 5476 = 2304∴ x = 48
Number System On converting the following base-2 numeral in base ten, 1101101, we get 106 108 107 109 106 108 107 109 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 109
Number System Find the average of the following set of scores 450, 1050, 12, 390, 143, 286, 550, 999 485 495 490 480 485 495 490 480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Required average score = (450 + 1050 + 12 + 390 + 143 + 286 + 550 + 999) / 8 = 3880 / 8 = 485
Number System What is the value of 8/11 of 5/7 of 96% of 28875 ? 14400 15400 12900 13800 14400 15400 12900 13800 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = 8 x 5 x 96 x 28875/11 x 7 x 100 = 14400
Number System A number when, 28 subtracted from it reduces to its one third. What is the value of 50% of that number? 21 84 24 42 21 84 24 42 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2/3 x = 28 => x = 4242 * 1/2 = 21
Number System In how many different ways can the letters of word 'BIOLOGY' be arranged ? 2520 2678 2367 2410 2520 2678 2367 2410 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In BIOLOGY total 7 letters are there but O comes twice.∴ Number of arrangements = 7!/2! = 2520
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