Number System 4550 ÷ 25% of ? = 130 125 140 130 135 125 140 130 135 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4550 ÷ ? x 25/100 = 130= 4550 ÷ ?/4 = 130= 4550 x 4/? = 130= ? x 130 = 4550 x 4= ? = 4550 x 4/130 = 140
Number System 74698 + 365 + 85213 + 95 = ? 160341 160361 160351 160371 160341 160361 160351 160371 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 74698 + 365 + 85213 + 95 = 160371
Number System 65% of 320+?=686 479 481 478 480 479 481 478 480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 65% of 320+?=686 208+?=686?=686-208?=478
Number System Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number? 160 180 240 140 160 180 240 140 ANSWER DOWNLOAD EXAMIANS APP
Number System If (35)² is added to the square of a number the answer so obtained is 1394. What is the number ? 13 17 11 15 13 17 11 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² + (35)² = 1394Therefore, x² = 1394 - (35)² = 1394 - 1225 = 169Therefore, x = √169 = 13
Number System A bag contains four red, six black and seven green balls. Three balls are drawn randomly. What is the probability that the balls drawn contain exactly two red balls ? 51/340 39/340 45/340 58/340 51/340 39/340 45/340 58/340 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total balls = 4 + 6 + 7 = 17∴ n(S) = 17C1 = 680Two red balls can be selected from four red balls in 4C2 = 6 ways.and the third ball can be selected from the remaining 13 balls in 13C1 = 13 ways.∴ P (E) = 13x6/680 = 39/340
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