41. What is the angle between the two hands at 8.20 O'clock?
Answer: 150 degree
Explanation:8 hr 20 min = 8 1/3 hrs. = 25/3 hrs.
Angle traced by hour hand in 12 hours = 360°
=> Angle traced by hour hand in 1 hour = 30°
Therefore, angle traced by hour hand in 25/3 hr = 25/3 * 30 = 250°
Angle traced by minute hand in 60 min = 360°
=> Angle traced by minute hand in 1 min = 6°
Therefore, angle traced by minute hand in 20 min = 6 × 20 = 120°
So, required angle = (250° - 120°) = 130°
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42. The sum of odd numbers between 0 and 10 is:
Answer: 25
Explanation:Formula for sum of numbers = n/2(a+l)
Here series is 1 3 5 7 9
a=1,n=5,l=9
So, 5/2(1+9)=25
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43. Sudhir started a business with Rs.30,000 and after 8 months Ravi joined him with Rs.60,000. If they get a profit of Rs.28000 then ratio of their shares will be
Answer: 3:2
Explanation:Ravi joined 8 months after => (12-8) = 4 months
Sudhir:Ravi = 30,000*12 : 60000*4
=> 36 : 24 = 3:2
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44. A milkman mixed 10 liters of water to 50 litres of milk of Rs.16 per liter, then cost price of mixture per liter is
Answer: Rs.13.33
Explanation:Let price of water per liter be Re. 1
((10*1)+(50*16))/60 =13.33
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45. The average age of five persons is 40 years while the average age of some other 10 persons is 25 years. The average age of all the 15 persons is:
Answer: 30 Years
Explanation:Average age for five person (x) = 40 years.
=>x/5=40 => x=200 years.
Average of 10 person (y) = 25 years.
y/10=25 => y=250 years.
so avg age of 15 person = (250+200) / 15==30 years.
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46. Sum of ages of two friends is 32 while difference is 2 then their ages are
Answer: 17 years, 15 years
Explanation:Lets assume a and b be two friends
So, (a+b)=32 ----- (1)
(a-b)=2 ------ (2)
a=17, b=15
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Tech Mahindra
47. In a day hands of clock will be together
Answer: 22 times
Explanation:The hands of a clock coincide 11 times in every 12 hours (Since between 11 and 1, they coincide only once, i.e., at 12 o'clock)
Therefore in a day, It coincides 22 times.
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48. Ravi and sunil are partners in a business. Ravi invests Rs.15,000 for 8 months and Sunil invested Rs.8000 for 10 months then after one year ratio of their profits will be:
Answer: 3:2
Explanation:Here is no explanation for this answer
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49. A can run 1.5 km distance in 2 min 20 seconds, while B can run this distance in 2 min 30 sec. By how much distance can A beat B?
Answer: 100 m
Explanation:A takes time 2.20 min. = 140 Sec. B takes time 2.30 min. = 150 Sec.
Diffrence = (150-140) = 10 Sec.
Now we are to find distance covered in 10 sec by B
150 Sec. = 1500 m.
1 Sec=10 m.
10 Sec = 10*10=100 m
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50. The calendar for 1992 is the same as for:
Answer: 1996
Explanation:1992 and 1996 both are leap years. so 1992 is same as 1996
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