If yuh are below or in class 10 then yuh won't get few questions of combination. Like for question 6... Since there are total 7 balls and we have to choose 3 balls out of 'em, so the total outcome will be 7^C3 means 7*6*5/3*2*1 = 35. Yuh gotta multiply the superscript in reverse order to three numbers, since subscript has 3 mentioned, and divide it by the product of reversing 3 to 1[thats how combination works ]
