Q:

If a, b and c are positive integers such that 1a+1b+1c+12 = 1623, then what is the mean of a, b and c?

A) 1 B) 2
C) 1.33 D) 2.33
 
Answer & Explanation Answer: B) 2

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7 1450
Q:

The  sum  of  three  prime  numbers  is  100.  If  one  of  them  exceeds  another  by  36,  then  one  of  the numbers is

A) 17 B) 29
C) 43 D) none
 
Answer & Explanation Answer: D) none

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Filed Under: Numbers
Exam Prep: Bank Exams

4 944
Q:

It is given that log10 2= 0.301 and log10 3 = 0.477. How many digits are there in (108)10?

A) 19 B) 20
C) 21 D) 22
 
Answer & Explanation Answer: C) 21

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Filed Under: Logarithms
Exam Prep: Bank Exams

38 4501
Q:

Which of the following pair of numbers is the solution of the equation 3x+2+ 3x= 10 ?

A) 0, 2   B) 0, -2
C) 1, -1 D) 1, 2
 
Answer & Explanation Answer: B) 0, -2

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Filed Under: Simplification
Exam Prep: Bank Exams

1 2075
Q:

Radha and Hema are neighbours and study in the same school. Both of them use bicycles to go to the school. Radha’s speed is 8 km/hr whereas Hema’s speed is 10 km/hr. Hema takes 9 minutes less than Radha to reach the school. How far is the school from the locality of Radha and Hema?

A) 5 km B)  5.5 km
C) 6 km D) 6.5 km
 
Answer & Explanation Answer: C) 6 km

Explanation:
Let the distance between be D km
Time taken by radha – Time taken by Hema = 9 mins
So D/8 – D/10 = 9/60 hrs
D = 6km
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Filed Under: Time and Distance
Exam Prep: Bank Exams

7 2698
Q:

In a hostel the rent per room is increased by 20%. If number of rooms in the hostel is also increased by 20% and the hostel is always full, then what is the percentage change in the total collection at the cash counter?

A) 30% B) 40%
C) 44% D) 48%
 
Answer & Explanation Answer: C) 44%

Explanation:
Let initial rent be rs 10
And initial rooms be 10
So initial collection = 10*10 = Rs 100
Now new rent = 10 + 20% of 10 = 12
New no of rooms = 10 + 20% of 10 = 12
So new collection = 12*12 = 144
% change in collection = (144-100)/100*100 = 44%
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Filed Under: Percentage
Exam Prep: Bank Exams

4 3255
Q:

For x > 0, what is the minimum value of  x + x+22x?

A) 1 B) 2
C) 2.5 D) 1.5
 
Answer & Explanation Answer: C) 2.5

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1443
Q:

Which of the following statements is not true?

A) The difference of two prime numbers, both greater than 2, is divisible by 2 B) For two different integers m, n and a prime number p, if p divides the product m × n, then p divides either m or n.
C)  If a number is of the form 6n –1 (n being a natural number), then its is a prime number. D) There is only one set of three prime numbers such that there is a gap of 2 between two adjacent prime numbers.
 
Answer & Explanation Answer: D) There is only one set of three prime numbers such that there is a gap of 2 between two adjacent prime numbers.

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Filed Under: Numbers
Exam Prep: Bank Exams

0 1182