Number System Find the average of the following set of scores 450, 1050, 12, 390, 143, 286, 550, 999 495 485 490 480 495 485 490 480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Required average score = (450 + 1050 + 12 + 390 + 143 + 286 + 550 + 999) / 8 = 3880 / 8 = 485
Number System Given √2 = 1.414, the value of √8 + 2√32 - 3√128 + 4√50 is 8.784 8.684 8.584 8.484 8.784 8.684 8.584 8.484 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8.484
Number System {(742)² ÷ 36} ÷ 2 = ? 423.5 422.5 420.5 421.5 423.5 422.5 420.5 421.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (174 x 174/36) ÷ 2 = 841/2 = 420.5
Number System The difference between 68% of a number and 35% of the same number is 1216. What is 28% of the number ? 1031.75 1027.75 1037.75 1043.75 1031.75 1027.75 1037.75 1043.75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore 68x / 100 - 35x / 100 = 1216 Therefore x = 1216 x 100 / 33Therefore 28% of x = 28x / 100 = 1216 x 100 / 33 x 28 / 100= 1216 x 100 x 28 / 33 x 1/100 = 1031.75
Number System In how many different ways can the letters of the word 'DETERMINE' be arranged ? 60480 61480 63480 62480 60480 61480 63480 62480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of arrangements = 9! / 3! Because, E comes 3 times = 60480
Number System What should come in the place of ' ? ' in the following number series ? 2, 5, 9, 19, 37, ? 75 77 76 78 75 77 76 78 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2 x 2 + 1 = 5;5 x 2 - 1 = 99 x 2 + 1 = 19: 19 x 2 - 1 = 3737 x 2 + 1 = 75
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