21. The least number which when divided by 5, 6 , 7 and 8 leaves a remainder 3, but when divided by 9 leaves no remainder, is:
Answer: 1683
Explanation:L.C.M. of 5, 6, 7, 8 = 840.
Required number is of the form 840k + 3
Least value of k for which (840k + 3) is divisible by 9 is k = 2.
Required number = (840 * 2 + 3) = 1683.
Workspace
Syntel Inc.
22. At a stadium a certain rows are to be reserved to accommodate 12 cricket players 24 football players and 32 soccer players. How many minimum rows need to be reserved if same number of players of only one category are to be seated in each rows
Answer: 4
Explanation:Here is no explanation for this answer
Workspace
Syntel Inc. TCS NQT
23. The electricity charges were increased by the company by 20%. To counter the increase, consumer decided to save power by 20%. What will be the impact on the company's revenue?
Answer: 4% Decrease
Explanation:Here is no explanation for this answer
Workspace
Syntel Inc.
24. The radius of a circular entertainment park is increased by 1%. What will be the percent increase in its area.
Answer: 2%
Explanation:Here is no explanation for this answer
Workspace
Syntel Inc.
25. ?/sqrt(0.0036) = 600
Answer: 36
Explanation:Here is no explanation for this answer
Workspace
Syntel Inc.
26. ? * 1.5 * 1.4 = 2.1
Answer: 1
Explanation:Here is no explanation for this answer
Workspace
Syntel Inc.
27. The average of run recorded by 8 players is 40. If the average of the runs by the first five players is 39, and that of the last four players is 34, what is the number of runs recorded by the fifth player?
Answer: 11
Explanation:Total run recorded by 8 players = 80*4 = 320
Total run by first five players = 5 * 39 = 195
Total run by four players = 4*34 = 136
Run record of fifth player = (195+136-320) = 11
Workspace
Syntel Inc.
28. The difference between simple interest and compound interest on a certain deposit for two years at 8 p.c.p. is Rs. 8. What is the amount of deposit
Answer: Rs. 1250
Explanation:Given Intrest rate r = 8%
Deposited for year n = 2 years
Formula: SI = p*n*r/100
=> p*2*8/100 = 4p/25
CI = Amount - p
Amount = p(1 + r/100)^n
=> p(1 + 8/100)^2
CI = p(27/25)^2 - p
p(27/25)^2- p - 4p/25 = 8
p[27*27 - 625 - 100]/625 = 8
4p = 5000 => p = Rs. 1250
Workspace
Syntel Inc.
29. At a certain rate of simple interesrt,a sum double itsef in 10 years.In how many years would it treble itsef?
Answer: None of these
Explanation:Lets Assume after 10 years amount = 2p
so, SI=2P-P = P
P=(P*R*10)/100
r=10%
now amount = 3P
SI= 3P-P=2P
2P=(P*10*T)/100
T=20years
Workspace
Syntel Inc.
30. The fourth proportional to 5,6 and 150 is?
Answer: 180
Explanation:Lets assume the fourth proportional = x
5 : 6 :: 150 : x
=> 5x= 6*150
=> x = 6*150/5 = 180
Workspace
Syntel Inc.
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