Number System What is 432 times 119 ? 50408 51408 52408 53408 50408 51408 52408 53408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
Number System I. 3x2-14x + 8 = 0 II. 2y2 - 1 7 y + 36 = 0 if x > y if x >= y if x <= y if x < y if x > y if x >= y if x <= y if x < y ANSWER EXPLANATION DOWNLOAD EXAMIANS APP l. 3x2 - 12x - 2x + 8 = 0or 3x(x - 4) -2 (x -4) = 0∴ x = 4, 2/3ll. 2y2 - 8y - 9y + 36 = 0or 2y (y - 4) -9 (y - 4) = 0or (2y - 9) (y - 4) = 0∴ y = 4, 9/2
Number System The number of prime factors of (6)10×(7)17×(55)27 41 61 101 91 41 61 101 91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 91
Number System What should come in the place of ' ? ' in the following number series ? 2, 5, 9, 19, 37, ? 76 77 75 78 76 77 75 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
Number System The cost of 87 pens and 29 pencils is `783. What is the cost of 90 pens and 30 pencils ? Rs. 800 Rs. 830 Rs. 820 Rs. 810 Rs. 800 Rs. 830 Rs. 820 Rs. 810 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the price of a pen be 'x' and that of pencil be 'y' Then 87x + 29y = 783Multiplying eqn (i) by 30/29 we get (87x) x 30/29 + (29y) 30/29 = 783 x 30/29∴ 90x + 30y = 810
Number System The sum of two numbers is 165 and the difference between them is 9. What is the average of these two numbers ? 84.5 82.5 83.5 85.5 84.5 82.5 83.5 85.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 165x - y = 92x = 174 ∴ x = 87 and y = 78∴ x + y/2 = 165/2 = 82.5
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