If $3-9+15-21+\dots$ up to $19$terms $=\mathrm{x}$, then $\mathrm{x}$ is a/ an:

Important Questions on Numbers and Their Properties

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 12

What is the units digit of ${21}^3\times {21}^2\times {34}^7\times {46}^8\times {77}^8?$

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 13

If the units digit in the product $(47\mathrm{n}\times 729\times 345\times 343)$ is $5$, what is the maximum number of values that $\mathrm{n}$ may take?

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 14

In how many ways, can $846$ be resolved into two factors?

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 15

If a number is divided by $15$, it leaves a remainder of  $7$. If thrice the number is divided by $5$, then what is the remainder?

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 16

A number when divided by $391$gives a remainder of $49$. Find the remainder when it is divided by $39$.

MEDIUM

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 17

p,q and r are prime numbers such that $p<q<r<13$. In how many cases would $(p+q+r)$ also be a prime number ?

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 18

How many distinct factors of $1600$are perfect cubes?

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 1 - Numbers and Their Properties>Practice Exercises>Q 19

The LCM of $96,144$ and N is $576$. If their HCF is $48$, then which of the following can be one of the values of N?