Number System 0.333 .... × 0.444 .... is equal to 1.333 .... 0.148148148 .... 0.121212 .... 0.777 .... 1.333 .... 0.148148148 .... 0.121212 .... 0.777 .... ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.148148148 ....
Number System What is the sum of all the composite numbers up to 20? 130 128 131 132 130 128 131 132 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 132
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. 1,000 Rs. 800 Rs. 1,200 Rs. 600 Rs. 1,000 Rs. 800 Rs. 1,200 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 In an examination, 68% of the total examinees passed. If the number of failures is 248, the total number of examinees is 725 775 640 750 725 775 640 750 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Failed students are 32% which is 248.∴ Total = 24800/32 = 775
Number System If (17)3 is subtracted from the square of a number, the answer so obtained is 2143. What is the number ? 82 83 84 81 82 83 84 81 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (17*17*17) = 2143or x² = 2143 + 4913 = 7056∴ x = 84
Number System The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers? Cannot be determined 92 70 29 Cannot be determined 92 70 29 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x and units digit by y.Then,(10x + y) - (10y + x) = 639(x - y) = 63x - y = 7Thus, none of the numbers can be determined.
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