Aptitude · all questions

Number System
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

677

Questions

26/34

Page

Pick an option on a question to see the right answer and solution.

Q501

Open question

The sum of the perfect square between 120 and 300 is :

Select an option to see the answer and solution.

Q502

Open question

What is the remainder when 4⁶¹ is divided by 51 ?

Select an option to see the answer and solution.

Q503

Open question

If n is a natural number and n =

p_{1}^{x_{1}}

p_{2}^{x_{2}}

p_{3}^{x_{3}}

where p₁, p₂, p₃ are distinct prime factors, then the number of prime factors for n is :

Select an option to see the answer and solution.

Q504

Open question

The number of prime factors in the expression 6¹⁰ × 7¹⁷ × 11²⁷ is equal to :

Select an option to see the answer and solution.

Q505

Open question

A number when divided by 195 leaves a remainder 47. If the same number is divided by 15, the remainder will be :

Select an option to see the answer and solution.

Q506

Open question

A young girl counted in the following way on the fingers of her left hand. She started calling the thumb 1, the index finger 2, middle finger 3, ring finger 4, little finger 5, then reversed direction, calling the ring finger 6, middle finger 7, index finger 8, thumb 9 and then back to the index finger for 10, middle finger for 11, and so on. She counted upto 1994. She ended on her

Select an option to see the answer and solution.

Q507

Open question

The numbers 1, 2, 3, 4, ......, 1000 are multiplied together. The number of zeros at the end (on the right) of the product must be :

Select an option to see the answer and solution.

Q508

Open question

The number 89715938* is divisible by 4. The unknown non-zero digit marked as * will be :

Select an option to see the answer and solution.

Q509

Open question

If p is a prime number greater than 3, then (p² - 1) is always divisible by :

Select an option to see the answer and solution.

Q510

Open question

The unit's digit of 13²⁰⁰³ is :

Select an option to see the answer and solution.

Q511

Open question

(46)² - (?)² = 4398 - 3066

Select an option to see the answer and solution.

Q512

Open question

Given n = 1 + x and x is the product of four consecutive integers. Then which of the following us true ?
I. n is an odd integer.
II. n is prime.
III. n is a perfect square

Select an option to see the answer and solution.

Q513

Open question

A boy multiplies 987 by a certain number and obtains 559981 as his answer. If in the answer both 9's are wrong but the other digits are correct, then the correct answer will be :

Select an option to see the answer and solution.

Q514

Open question

The product of any three consecutive natural numbers is always divisible by :

Select an option to see the answer and solution.

Q515

Open question

If (67⁶⁷ + 67) is divided by 68, the remainder is :

Select an option to see the answer and solution.

Q516

Open question

If 11,109,999 is divided by 1111, then what is the remainder ?