squareroots and cuberoots Model Questions & Answers, Practice Test for ssc cgl tier 1 2023

Question :11

If $√21025$ = 145, then the value of $√210.25 + √2.1025$ = ?

Answer: (d)

$√{{210.25}/100} + √{{21025}/1000}$

⇒$145/10 + 145/100$⇒14.5 + 1.45 = 15.95

Question :12

$√{97344}$ = ?

Answer: (e)

312

Question :13

A least four digit perfect square whose first two digits and last two digits taken separately are also perfect squares, is:

Answer: (d)

Question :14

$((56)^2 + (44)^2)$ ÷ ? = 16

Answer: (d)

? = ${(56)^2 + (44)^2}/16$ = $[(56)^2 + (44)^2]/(4)^2$

= $(56/4)^2 + (44/4)^2$ = $14^2 + 11^2$ = 196 + 121 = 317

Question :15

The least 6 digit number which is perfect square is

Answer: (c)

Least six digit number is 100000, which is not a perfect square because it has odd number of zeroes.

First let us extract the square number hidden in it.

square-roots-and-cube-roots-mcq-problems-quantitative-aptitude

∴ We find that 100000 > $(316)^2$ by 154

Next square number $(317)^2$ > 100000

∴ $(316)^2$ < 100000 < $(317)^2$

∴ If we add $(317)^2$ –100000 = 489 to 100000

We get least six digit perfect sq. no.

∴ Least four digit perfect square no. is 100489.

ssc cgl tier 1 2023 IMPORTANT QUESTION AND ANSWERS

Recently Added Subject & Categories For All Competitive Exams

100+ Quadratic Equation Questions Answers PDF for Bank

Quadratic Equation multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams

03-Jul-2024 by Careericons

Continue Reading »

IBPS Aptitude Linear Equations MCQ Questions Answers PDF

Linear equations multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams

03-Jul-2024 by Careericons

Continue Reading »

New 100+ Compound Interest MCQ with Answers PDF for IBPS

Compound Interest verbal ability questions and answers solutions with PDF for IBPS RRB PO. Aptitude Objective MCQ Practice Exercises all competitive exams

02-Jul-2024 by Careericons

Continue Reading »

100+ Mixture and Alligation MCQ Questions PDF for IBPS

Most importantly Mixture and Alligation multiple choice questions and answers with PDF for IBPS RRB PO. Aptitude MCQ Practice Exercises all Bank Exams

02-Jul-2024 by Careericons

Continue Reading »