﻿ Quantitative aptitude Question for all banking Bank PO,Clerk,IBPS PO,Railway,SSC,PSUs,IAS,OAS ,C-SAT Exams ﻿

### Mathmetics

ISBT Mathmetics for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

##### What are the two natural numbers whose difference is 66 and the LCM is 360 ?
 1) 90 and 24 2) 120 and 24 3) 120 and 54 4) 180 and 114 5) None of these
Explanation : The factors of 360 = 2 X 2 X 2 X 3 X 3 X 5
So, two numbers are 2 X 2 X 2 X 3 =24 and 2 X 3 X 3 X 5 = 90
##### A shopkeeper sells some articles on profit of 20% of the cost price. Find out the actual Gain ? I. Selling price of the article. II. Cost price of the article
 1) Neither I nor II 2) Either I or II 3) Both I and II 4) Only II 5) Only I
Answer : Either I or II
##### If x=2015, y=2014 and 2013 , then x2+y2+z2 -xy-yz-zx = ?
 1) 2 2) 3 3) 4 4) 6 5) None of these
Explanation : ATQ: x2+y2+z2 -xy-yz-zx
= x2-xy+y2 -yz+z2-zx
x(x-y) + y((y-z) + z(z-x)
= 2015(2015-2014) + 2014(2014-2013)+2013(2013-2015)
= 2015 + 2014 + 4026
=4029-4026 =3

##### Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.(A) 4 2 3 7.5 26.25 118.125(B) 6 (a) (b) (c) (d) (e)What will come in the place of (c) ?
 1) 12.25 2) 11.5 3) 11.125 4) 12.5 5) None of these
Explanation : x .5, x1.5, x 2.5, x 3.5 , x 4.5 and so on
##### Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.(A) 2 3 7 25 121 721 (B) 3 (a) (b) (c) (d) (e)What will come in the place of (c) ?
 1) 31 2) 39 3) 45 4) 49 5) None of these
Explanation : x 2 -1, x 3-2, x 4-3, x 5 -4 and so on ...
##### Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.(A) 2 3 10 39 172 885(B) 5 (a) (b) (c) (d) (e)What will come in the place of (d) ?
 1) 175 2) 196 3) 208 4) 244 5) None of these
Explanation : x 1+12,, x 2+22, x 3+32, x 4+42 and so on ....
##### Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.(A) 3 12 30 66 138 282(A) 7 (a) (b) (c) (d) (e)What will come in the place of (b)?
 1) 34 2) 46 3) 70 4) 76 5) None of these
Explanation : x 2 +6 , x 2+6 , and so on
##### Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.(A) 7 20 46 98 202 410(A) 4 (a) (b) (c) (d) (e)What will come in the place of (d)?
 1) 146 2) 162 3) 166 4) 184 5) None of these