Q2. What shape is (a) Your instrument box? (b) A brick? (c) A matchbox? (d) A road-roller? (e) A sweet laddu?
Question 6. Let ∗ be the binary operation on N given by a ∗ b = L.C.M. of a and b. Find
(v) Which elements of N are invertible for the operation ∗?
You get one-fifth of a bottle of juice and your sister gets one-third of the same size of a bottle of juice. Who gets more?
one third is greater potion than one fifth
A fraction is given. How will you decide, by just looking at it, whether, the fraction is
(a) less than ?
(b) equal to ?
Give a proper fraction :
(a) whose numerator is and denominator is
(b) whose denominator is and numerator is
(c) whose numerator and denominator add up to . How many fractions of this kind can you make?
(d) whose denominator is more than the numerator.
(Give any five. How many more can you make?)