Number System The average of 7 numbers is 15, that of the first three is 6 and that of the last three is 23. What is the fourth number? 15 13 18 7 15 13 18 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4th No. = (Total of 7 Nos) - (Total of first three + total of last 3) = (15 x 7) - (6 x 3 + 23 x 3) = 105 - (18 + 69) =105 - 87 = 18
Number System A man engaged a servant on the condition that he would pay him Rs.710 and a uniform after a year service. He served only for 8 months and got Rs.460 and a uniform. Find the price of the uniform? Rs.20 Rs.30 Rs.25 Rs.40 Rs.20 Rs.30 Rs.25 Rs.40 ANSWER DOWNLOAD EXAMIANS APP
Number System If 5/7 of a number is 145, what is 180% of that number ? 375.4 355.4 345.4 365.4 375.4 355.4 345.4 365.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 5/7 = 145∴ x = 145 x 7/5 = 203Now, 203 x 180/100 = 365.4
Number System On converting the following base-2 numeral in base ten, 1101101, we get 109 106 108 107 109 106 108 107 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 109
Number System What is the least number, which is perfect square but contains 2700 as its factor? 1800 2700 5400 10800 1800 2700 5400 10800 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 900 * 3 * 3 = 8100
Number System √9216 + √15376 = ? 231 220 224 227 231 220 224 227 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √9216 + √15376= 96 + 124= 220
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