Number System What is the difference between the largest number and the least number written with the digits 7, 3, 1, 4? 5084 6084 6184 6048 5084 6084 6184 6048 ANSWER DOWNLOAD EXAMIANS APP
Number System 5358 * 51 = ? 273258 273268 273348 273358 273258 273268 273348 273358 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258
Number System If A + B = 30 and AB = 94, What is the value of A² + B² ? 824 920 712 625 824 920 712 625 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94 = 900 - 188 = 712
Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1260 1300 1280 1240 1260 1300 1280 1240 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System How many words can be made using the letters of the word "BHAG WADGITA" if all the vowels come together and all the consonants come together ? 10160 30160 40160 20160 10160 30160 40160 20160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of words = l2 l4 l7 / l3 l2 = 20160
Number System Of an amount, 20% of 25% of 30% is Rs 75. Then what is the original amount ? Rs. 3000 Rs. 5000 Rs. 4000 Rs. 2000 Rs. 3000 Rs. 5000 Rs. 4000 Rs. 2000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the amount be x.∴ X x 20/100 x 25/100 x 30/100 = 75∴ X = 75 x 5 x 4 x 10/3 = 5000
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