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Q:

What is the sum of all natural numbers between 100 and 400 which are divisible by 13?

A) 5681	B) 5334
C) 5434	D) 5761

Answer & Explanation Answer: A) 5681

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

Q:

If 56 × 75 × 60 × 84 × 210 = $2^{p} \times 3^{q} \times 5^{r} \times 7^{s}$ , then what is the value of [(p + q)/s] + r?

A) 6	B) 8
C) 12	D) 10

Answer & Explanation Answer: B) 8

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If $A = \frac{1}{1 x 2} + \frac{1}{1 x 4} + \frac{1}{2 x 3} + \frac{1}{4 x 7} + \frac{1}{3 x 4} + \frac{1}{7 x 10} . . .$ upto 20 terms, then what is the value of A?

A) 379/308	B) 171/140
C) 379/310	D) 420/341

Answer & Explanation Answer: D) 420/341

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

Q:

If $A = \frac{0.216 + 0.008}{0.36 + 0.04 - 0.12} & B = \frac{0.729 - 0.027}{0.81 + 0.09 + 0.27}$ , then what is the value of ${(A^{2} + B^{2})}^{2}$ ?

A) 0.8	B) 1
C) 1.4	D) 2.2

Answer & Explanation Answer: B) 1

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If N = 0.369369369369... and M = 0.531531531531..., then what is the value of (1/N) + (1/M)?

A) 11100/2419	B) 111/100
C) 1897/3162	D) 2419/11100

Answer & Explanation Answer: A) 11100/2419

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

Q:

If the sum of ten different positive integers is 100, then what is the greatest possible number among these 10 numbers?

A) 45	B) 91
C) 55	D) 64

Answer & Explanation Answer: C) 55

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

Q:

How many three digit numbers are there in which all the digits are odd?

A) 100	B) 125
C) 500	D) 250

Answer & Explanation Answer: B) 125

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

Q:

Can You Guess The Missing Numbers In The Given Math Puzzle?

A)	B)
C)	D)

Answer & Explanation Answer: A)

Explanation:

Let the missing numbers be x, y, a and b

x + y = 8 ---- (1)
a - b = 6 ---- (2)
x + a = 13 --- (3)
y + b = 8 ---- (4)

2x + a + y = 21 --- From (1 & 3)
a + y = 14 ---- From (2 & 4)

Substitute (2 & 4) in (1 & 3)

2x + 14 = 21
2x = 7
x = 3.5

From (1) ---> 3.5 + y = 8
=> y = 8 - 3.5 = 4.5

a + y = 14 => a = 14 - y = 14 - 4.5 => a = 9.5
From (4) ---- y + b = 8 => b = 8 - y = 8 - 4.5 = 3.5

Hence,
x = 3.5
y = 4.5
a = 9.5
b = 3.5

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Filed Under: Math Puzzles
Exam Prep: CAT , Bank Exams

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