61. A watch gains 5 min. every hour. If it has set right at 12 noon. what is the true time when the watch is showing 5 pm,on the same day?
Answer: 4:580/13
Explanation:65 min of 1st clock = 60 min of correct clock
5 hr of this clock = 60x5/65 of correct clock=60/13
correct time is 60/13 hr after 12 = 4:8/13=4:480/13
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62. A call center agent has a list of 305 phone nos of people in alphabetic order of names (but she does not have any of the names). she needs to quickly contacts deepak sharma to convey a message to him.If each call takes 2 minutes to complete, and every call is answered, what is the minimum amount of time in which she can guarantee to deliver the message to Mr.Sharma.
Answer: 18
Explanation:305/2=152
152/2=71
71/2=35
35/2=17
17/2=8
8/2=4
4/2=2
2/2=0
we get 0 after 9 times.
ans=9*2=18
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63. If on an item a company gives 25% discount, they earn 25% profit. If they now give 10% discount then what is the profit percentage.
Answer: 30%
Explanation:Lets assume the cost = Rs x.
After giving 25% discount it becomes 0.75x
Selling price = 0.75x which gives 25% profit...(1)
Thus, after giving 10% discount it becomes 0.90x
Selling price = 0.90x ......(ii)
From eq. (1) and (2),
0.90x will gives = (25 * 0.90x)/ (0.75x) = 30 % profit.
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64. find the number that can be put in place of the question mark.
1.25,3,7.1,1.50,1,8.1,1.75,-1,?
Answer: 9.1
Explanation:1.25+0.25=1.50+0.25=1.75
3-2=1-2=-1
7.1+1=8.1+1=answer is 9.1
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65. In month of jan 4 thursday and 4 sunday then on 1st jan of that month which willbe the day?
Answer: Monday
Explanation:Here is no explanation for this answer
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66. The famous church in the city of Kumbakonnam has a big clock tower and is said to be over 300 years old. Every Monday 10.00 A M the clock is set by Antony, doing service in the church. The Clock loses 6 mins every hour. What will be the actual time when the faulty clock shows 3 P.M on Friday?
Answer: 4:54 am Friday
Explanation:Monday 10am to friday 3pm=101 hours=606 minutes=10 hours 6 minutes delay
So, time at 3 pm = 4:54am
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67. A drawer hold 4 red hates and 4 blue hates. what is the probability of getting exactly 3 hatesv when taking out 4 hates randomly out of the drawerband imediately returining every hate to the drawer before taking out the next?
Answer: 8-Jan
Explanation:The probability of drawing red or blue is equal.
Probability to draw exactly 3 red hats and 1 blue hat =1/2*1/2*1/2*1/2=1/16
Similarly probability to draw exactly 3 blue hats and 1 red hat =1/2*1/2*1/2*1/2=1/16
Total probability =1/16+1/16=1/8
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68. Sum of 1(2)+2(2)^2+3(2)^3+.......+100(2)^100
Answer: None of these
Explanation:Here is no explanation for this answer
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69. Find the number that can be put in place of the question mark.
3 7 14 23 36 49 ? 83 104
Answer: 56
Explanation:7-3=4 4*4=16 16-2=14
36-23=13 13*4=52 52-3=49
83-56=27 27*4=108 108-4=104
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70. There are 20 balls which are red,blue,or green.If 7 balls are green and the sum of red balls and green balls is less than 13, at most how may red balls are ?
Answer: 5
Explanation:Green ball =7
G + R < 13
So, red can be 1 or 2 or 3 or 4 or 5
For atmost red ball take red = 5
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