Number System If the three fourth of a number is subtracted from the number; the value so, obtained is 163. What is that number ? 678 652 689 692 678 652 689 692 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number x (1 - 3/4) = 163∴ Number = 163 x 4 = 652
Number System How many numbers up to 100 are divisible by 7? 107 93 14 100 107 93 14 100 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers
Number System If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ? 131 101 121 111 131 101 121 111 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2 = 47765 - 33124Therefore x² = 14641, Therefore x = 121
Number System A trader sells 40 metres of cloth for Rs 8,200 at a profit of Rs 25 per metre of cloth. How much profit will the trader earn on 40 metres of cloth ? Rs. 600 Rs. 1,200 Rs. 800 Rs. 1,000 Rs. 600 Rs. 1,200 Rs. 800 Rs. 1,000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP S.P. per metre = 8200/40 = Rs. 205∴ C.P. per metre = Rs. (205 - 25) = Rs. 180∴ C.P. of 40 metre cloth= Rs. (40 x 180) = Rs. 7200∴ Gain = Rs. (8200 - 7200) = Rs. 1000
Number System If the difference between a number and two-fifths of that number is 45 what is the number ? 75 76 77 78 75 76 77 78 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x ∴ x - 2x/5 = 45∴ x = 75
Number System If 2^(2x-1) = 8^(3-x), then the value of x is: 2 9 6 5 2 9 6 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2
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