S1 Chapter 1 Basic Mathematics

Which of the following is correct?

• $4^3=4\times3$

• $2^4=2+2+2+2$

• $5^3=3\times3\times3\times3\times3$

• $7^4=7\times7\times7\times7$

Which of the following is a prime factor of 552?

• 13

• 17

• 23

• 29

The H.C.F. of  $2^3\times3^4\times5^2$   and  $2^5\times3^2$   is

•  $2^3\times3^2$  .

•  $2^5\times3^4$  .

•  $2^3\times3^2\times5^2$  .

•  $2^5\times3^4\times5^2$  .

The L.C.M. of  $2^4\times7$  and  $2^3\times5^2\times7^3$  is

•  $2^3\times7$  

•  $2^4\times7^3$  

•  $2^3\times5^2\times7$  

•  $2^4\times5^2\times7^3$  

 $12\times\left\{4-\left[10-\left(5+3\right)\right]\div2\right\}=$  

• 0

• 12

• 36

• 47

 $\frac{3}{4}\div\left[4-\left(2\frac{1}{3}-\frac{1}{4}\right)\right]=$  

•  $\frac{9}{17}$  

•  $\frac{23}{16}$  

•  $\frac{9}{23}$  

•  $\frac{17}{16}$  

Which of the following is/are divisible by 9?

I. 2349

II. 5636

III. 78 281

• I only

• II only

• I and III only

• II and III only

Which of the following are factors of 49 032?

I. 3

II. 5

III. 8

• I and II only

• I and III only

• II and III only

• I, II and III

Which of the following numbers is divisible by 9 but not divisible by 4?

• 2862

• 3145

• 3528

• 5713

56🌕 is a 3-digit number. If it is divisible by 4, which of the following is a possible value of 🌕?

• 2

• 4

• 6

• 7