Mathematics Quiz For RRB NTPC : 12th December

Q1. Of the three numbers, the ratio of the first and the second is 8 : 9 and that of the second and third is 3 : 4. If the product of the first and third number is 2400, then the second number is
(a) 45
(b) 40
(c) 30
(d) 35

Q2. A boat is rowed downstream at 15.5 km/h and upstream at 8.5 km/h the speed of the stream is
(a) 3.5 km/h
(b) 5.75 km/h
(c) 6.5 km/h
(d) 7 km/h

Q3. The price of a Maruti car rises by 30% while the sales of the car comes down by 20%. What is the percentage change in the Total revenue ?
(a) – 4%
(b) – 2%
(c) + 4%
(d) + 2%

Q4. Zinc and copper are in the ratio 5 : 3 in 400 g of an alloy. How much of copper (in g) should be added to make the ratio 5 : 4?
(a) 72
(b) 200
(c) 50
(d) 66

Q5. If 1/3 A=1/4 B=1/5 C then what is (A + B)/(A + B + C) = ?
(a) 3/4
(b) 7/12
(c) 5/7
(d) 5/12

Q7. Sum of three consecutive integers is 51. The middle one is?
(a) 14
(b) 15
(c) 16
(d) 17

(a) 998999
(b) 999899
(c) 989999
(d) 999989

Q9. Factorize x² + 3x ­ 18
(a) (x+18)(x­1)
(b) (x­1)(x+18)
(c) (x+6)(x­3)
(d) (x­6)(x+3)

Q10. If sum of the roots of a quadratic equation is –7 and product of the roots is 12. Find the quadratic equation.
(a) x² + 7x + 12 = 0
(b) x² – 7x + 12 = 0
(c) x² – 7x – 12 = 0
(d) x² + 7x – 12 = 0

Solutions:

 

 

 

Important Links for RRB NTPC Recruitment 2019

 

Download Upcoming Government Exam Calendar 2021

×

Download success!

Thanks for downloading the guide. For similar guides, free study material, quizzes, videos and job alerts you can download the Adda247 app from play store.

Thank You, Your details have been submitted we will get back to you.

Leave a comment

Your email address will not be published. Required fields are marked *

Join India largest learning distination

What You Will get ?

  • Job Alerts
  • Daily Quizes
  • Subject-Wise Quizes
  • Current Affairs
  • previous year question papers
  • Doubt Solving session

Login

OR

Forgot Password?

Join India largest learning distination

What You Will get ?

  • Job Alerts
  • Daily Quizes
  • Subject-Wise Quizes
  • Current Affairs
  • previous year question papers
  • Doubt Solving session

Sign Up

OR
Join India largest learning distination

What You Will get ?

  • Job Alerts
  • Daily Quizes
  • Subject-Wise Quizes
  • Current Affairs
  • previous year question papers
  • Doubt Solving session

Forgot Password

Enter the email address associated with your account, and we'll email you an OTP to verify it's you.


Join India largest learning distination

What You Will get ?

  • Job Alerts
  • Daily Quizes
  • Subject-Wise Quizes
  • Current Affairs
  • previous year question papers
  • Doubt Solving session

Enter OTP

Please enter the OTP sent to
/6


Did not recive OTP?

Resend in 60s

Join India largest learning distination

What You Will get ?

  • Job Alerts
  • Daily Quizes
  • Subject-Wise Quizes
  • Current Affairs
  • previous year question papers
  • Doubt Solving session

Change Password



Join India largest learning distination

What You Will get ?

  • Job Alerts
  • Daily Quizes
  • Subject-Wise Quizes
  • Current Affairs
  • previous year question papers
  • Doubt Solving session

Almost there

Please enter your phone no. to proceed
+91

Join India largest learning distination

What You Will get ?

  • Job Alerts
  • Daily Quizes
  • Subject-Wise Quizes
  • Current Affairs
  • previous year question papers
  • Doubt Solving session

Enter OTP

Please enter the OTP sent to Edit Number


Did not recive OTP?

Resend 60

By skipping this step you will not recieve any free content avalaible on adda247, also you will miss onto notification and job alerts

Are you sure you want to skip this step?

By skipping this step you will not recieve any free content avalaible on adda247, also you will miss onto notification and job alerts

Are you sure you want to skip this step?