Playing with numbers class 8 EX 14.1 Q1 (2,3)

Try converting the following mixed numbers to fractions. Q. 8(1)/(3)

The mean of 8 numbers is 11. If 3 of these numbers are in the ratio 1:2:3 and the remaining 5 numbers are 9, 10, 13, 14, and 18, find the 3 numbers.

Find the actual lower and upper class limits and also the class marks of the classes : 1.1 - 2.0, 2.1 - 3.0 and 3.1 - 4.0.

In the following pairs, which number is to the right of the other on a number line ? a. 12, 9 b. -13, -14 c. -8, 8 d. -1, 0

Sets , Nios, Class-12, Ch-1 ,Ex-1.1 ,Q-1

The median of 8 numbers is 11. If 7 of these numbers are 26, 12, 3, 8, 5, 20, and 14, find the eighth number.

If p ,q , in {1,2,3,4}, then find the number of equations of the form p x^2+q x+1=0 having real roots.

If p ,q , in {1,2,3,4}, then find the number of equations of the form p x^2+q x+1=0 having real roots.

If m=number of distinct rational numbers p/q in (0,1) such that p, q in {1,2,3,4,5} and n= number of onto mappings from {1, 2, 3} onto {1,2}, then m-n is