Aptitude [TCS Placement]: Sample Questions 98 - 100 of 174

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Question 98

Aptitude

Question

MCQ▾

A person had to multiply two numbers. Instead of multiplying by 35, he multiplied by 53 and the product went up by 540. What was the raised product?

Choices

Choice (4)

a.

1040

b.

1720

c.

780

d.

1590

Answer

d.

Explanation

  • Let two numbers be x and 35.
  • Instead of multiplying the number x by 35, person multiplies it with 53.
  • Result of this mistake is that product is raised by 540.
  • Writing in equation form,

  • The product will be

Question 99

Aptitude
Edit

Write in Short

Short Answer▾

A student ′ s average (arithmetic mean) test score on 4 tests is 78. What must be the students score on a 5th test for the students ′ average score on the 5th test to be 80?

Explanation

  • A student՚s average score for 4 tests is 78.
  • Let the total score of student in 4 subjects be x

  • Adding 5th test marks, average of student gets increased by two, i.e..
  • Let the score obtained by student in 5th test is y.

  • So, student has scored 88 marks in 5th test.

Question 100

Aptitude
Edit

Write in Short

Short Answer▾

Convert the decimal number 310 to base 6.

Explanation

  • Dividing 310 (base 10) by 6, quotient will be 51 and remainder will be 4
  • Dividing 51 by 6, quotient is 8 and remainder is 3
  • Dividing 8 by 6, quotient is 1 and remainder is 2
  • Dividing 1 by 6, quotient is 0 and remainder is 1
  • Reversing the order of remainders, equivalent of 310 (base 10) number will be 1234 (base 6) .
  • So, equivalent base 6 number is 1234 for decimal number 310.

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