` If `|a|` denotes the absolute value of an integar , then which of the following are correct ? `|ab| = | a | | b |` 2. `|a + b | le |a| + | b|` 3. `|a-b| ge |a| - |b | |` Select the correct answer using the code given below.

If |a| denotes the absolute value of an integer, then which of the following are correct? (1)|ab|=|a||b|

If a+b+c=0, then which of the following are correct? 1. a^(3) + b^(3) + c^(3) = 3abc 2. a^(2) + b^(2) + c^(2) = -2(ab + bc + ca) 3. a^(3) + b^(3) + c^(3) = -3ab(a+b) Select the correct answer using the code given below

If a and b are negative real numbers and c is a positive real number, then which of the following is/are correct? 1. a-b lt a-c 2. If a lt b , then (a)/(c ) lt (b)/(c ) . 3. (1)/(b) lt (1)/(c ) Select the correct answer using the code given below.

If the average of A and B is 30, the average of C and D is 20, then which of the following is/are correct? 1. The average of B and C must be greater than 25. 2. The average of A and D must be less than 25. Select the correct answer using the code given below:

If (a, b) is at unit distance from the line 8x+6y+1=0 , then which of the following conditions are correct ? 1. 3a-4b-4=0 2. 8a+6b+11=0 3. 8a+6b-9=0 Select the correct answer using the code given below :

IF A=pi//6 and B=pi//3 then which of the following is/are correct? 1. sinA+sinB=cos A+cos B 2. tanA+ tan B=cot A+ cot B Select the correct answer using the code given below:

A=[{:(3,1),(0,4):}]and B = [{:(1,1),(0,2):}] , then which of the following is/are correct ? I. AB is defined II. BA is defined III. AB = BA Select the correct answer using the codes given below.