Number System In how many ways can 5 boys be chosen from 6 boys and 4 girls so as to include exactly one girl ? 58 54 56 60 58 54 56 60 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP One girl can be chosen in 4C1 = 4 ways and 4 boys can be chosen in 6C4 = 15 ways ∴ Total number of ways = 4 x 15 = 60 ways.
Number System A canteen requires 17 dozen of eggs per week. How many eggs will it require from January 1 to February 11 ? 525 1224 987 820 525 1224 987 820 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of days from Jan 1 to Feb 11th= 31 + 11 = 42 days = 6 weeks∴ Total eggs =17 x 12 x 6 = 1224
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.40 Rs.30 Rs.20 Rs.25 Rs.40 Rs.30 Rs.20 Rs.25 ANSWER DOWNLOAD EXAMIANS APP
Number System If a number is subtracted from its square we get 272. Find the number? 17 24 22 14 17 24 22 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
Number System In a five-litre mixture of milk and water the portion of water is 30%. How much milk should be added to the mixture so that the portion of water reduces to 5% ? 29 litre 25 litre 21 litre 17 litre 29 litre 25 litre 21 litre 17 litre ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Original mixture = 5 litre; Milk = 3.5 litre;Water = 1.5 litre Let x litre of milk be added so thatthe mixture becomes (x + 5) litres and the percentage of water becomes 5%So, 1.5 = (x + 5) x 5/10030 = x + 5∴ x = 25 litre
Number System What is 432 times 119 ? 51408 52408 50408 53408 51408 52408 50408 53408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
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