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  • Delhi Police Exam Numerical Ability Study Material

Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of Numerical Ability Numbers Operations for Delhi Police Exam student. This free online Numerical Ability study material for Delhi Police Exam will help students in learning and doing practice on Numbers Operations topic of Delhi Police Exam Numerical Ability. The study material on Numbers Operations, help Delhi Police Exam Numerical Ability students to learn every aspect of Numbers Operations and prepare themselves for exams by doing online test exercise for Numbers Operations, as their study progresses in class. Kidsfront provide unique pattern of learning Numerical Ability with free online comprehensive study material and loads of Delhi Police Exam Numerical Ability Numbers Operations exercise prepared by the highly professionals team. Students can understand Numbers Operations concept easily and consolidate their learning by doing practice test on Numbers Operations regularly till they excel in Numerical Ability Numbers Operations.


Numbers Operations
If x is a prime number, LCM of x and its successive number would be ........

a) X(x+1)
b) X+1
c) X
d) X / (x+1)


✔Answer
✔Solution
Correct Answer Is : X(x+1)
Solution Is : The LCM of a prime number and its successive number will be the multiple of both the numbers . Hence x(x+1) .
A least number of 4 digits when increased by 5 is completely divisible by 12, 15, 20 and 35. The number is

a) 1275
b) 1265
c) 1235
d) 1255


✔Answer
✔Solution
Correct Answer Is : 1265
Solution Is : A least number of 4 digits =1000 LCM of12,15,20,35=420 The required number is 420*n+5 =420*3+5 (for least) =1260+5 =1265
X varies directly with the product of y and z . When y=45 and z=200, x=200. when y=90, z=30 then x is

a) 200
b) 900
c) 600
d) 2700


✔Answer
✔Solution
Correct Answer Is : 600
Solution Is : According to the question x & y z x=k y z(where k is a constant ) 200=k*45*20 k=200/900=(2/9) when y=90, z=30, then x=k*90*30 =(2/9)*90*30 =20*30=600
1008 divided by which single digit number gives a perfect square ?

a) 8
b) 7
c) 4
d) 9


✔Answer
✔Solution
Correct Answer Is : 7
Solution Is : Factor of 1008 = 2*2 *2*2 * 3*3 *7 so, 1008 is divided by 7 to get a perfect square.
The value of √.000441 is equal to

a) 0.0021
b) 0.21
c) 0.00021
d) 0.021


✔Answer
✔Solution
Correct Answer Is : 0.021
Solution Is : Let x = √.000441 x = √441/1000000, x = √21 * 21/ 1000 * 1000, x= 21/1000, x = 0.021.
The smallest number by which 243000 be divided so that the quotient is a perfect cube is

a) 1
b) 3
c) 27
d) 9


✔Answer
✔Solution
Correct Answer Is : 9
Solution Is : Factors of 243000 243000 = 3*3*3 * 2*2*2 * 5*5*5 * 3*3 So, 243000 is divided by 9 to get a perfect cube.
Two numbers, when divided by 17, leave remainders 13 and 11 respectively. If the sum of those two numbers is divided by 17, the remainder will be

a) 13
b) 11
c) 7
d) 4


✔Answer
✔Solution
Correct Answer Is : 7
Solution Is :
Which one of the following is a factor of the sum of first twentyfive natural numbers ?

a) 26
b) 24
c) 13
d) 12


✔Answer
✔Solution
Correct Answer Is : 13
Solution Is :
The sum of all even numbers between 21 and 51 is

a) 518
b) 540
c) 560
d) 596


✔Answer
✔Solution
Correct Answer Is : 540
Solution Is :
The product of two numbers is 216. If the HCF is 6, then their LCM is

a) 72
b) 60
c) 48
d) 36


✔Answer
✔Solution
Correct Answer Is : 36
Solution Is :

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