8 NCERT MATH MCQ

Q1. What is the remainder when five digit number 23abc is divided by 5 if 'c' is non-zero natural number not more than 5. c c - 1 Zero Either c or 0 Solution A number to be divisible by 5 should have 0 or 5 at one's place. Since c is non zero natural number not more than 5, it will be 0 c 5, therefore on dividing the remainder will be either c or 0. Q2. A two digit number is 5 times the sum of its digits. What is the remainder when this number is divided by 9? Zero 1 4 ...

Q1. A line graph is called as: Bar graph Linear graph Pie graph None of these Solution A line graph is called as linear graph. Q2. Which of the following points lie on the graph of "y = x"? (1, 2) (2, 1) (2, 2) (0, 1) Solution (2, 2) lies on the graph of y = x as x = 2 and y = 2 i.e., x = y Q3. Points (-1,2), (-4,7),(-3,1) and (-2,4) lie in. I quadrant ...

Q1. What is the quotient if 18(a 2 bc + ab 2 c + abc 2 ) is divided by 6abc? a + b + c 3a + b + c 3(a + b + c) 3(a 2 +b 2 + c 2 ) Solution As per the process of division     Q2. a 2 - 2ab + b 2 = (a - 2b) 2 (a - b) 3 (a - b) 2 (a + b) 2 Solution a 2 - 2ab + b 2 = a 2 - ab - ab + b 2 = a(a - b) - b(a - b) = (a - b) 2 Q3. x 2 + (a + b)x + ab can be factorised as ______ .             ...

Q1. If 15 toys cost Rs. 237, then what is the cost of 45 toys? Rs. 511 Rs. 711 Rs. 834 Rs. 911 Solution Q2. If two quantities are in direct proportion then the ______of their respective values is constant. Ratio Sum Product Difference Solution Ratio Q3. Two numbers which are indirectly proportional have their ____________ constant. ...

Q1. 27 12 can also be expressed as ______ 3 36 6 12 3 42 9 10 Solution (27) 12 = (3 3 ) 12 = 3 36 Q2. 1 micron is equal to _______ expressed in meters 10 -9 10 -4 10 -6 10 -5 Solution 10 -6 Q3. 146.3042 when written in the standard form will involve a factor of 10 raised to the power ______ . 3 ...