Write a digit in the blank space of the following number, so that the number formed is divisible by 11. 8___9484

5

(a)

Find the greatest number that will divide 445, 572 and 699, leaving remainders 4, 5 and 6 respectively.

5

(a)

Three brands A, B and C of biscuits are available in packets of 12, 15 and 21 biscuits, respectively. If a shopkeeper wants to buy an equal number of biscuits of each brand, what is the minimum number of packets of each brand, he should buy?

5

(a)

On a morning walk, three persons step off together and their steps measure 40 cm, 42 cm and 46 cm, respectively.
(a) What is the minimum distance each should walk so that each can cover the same distance in complete steps?
(b) What are the benifits of morning walk?

5

(a)

Find a 4-digit odd number using each of digits 1, 2, 4 and 5 only once such that when the first and last digits are interchanged, it is divisible by 4.

5

(a)

Monica, Heronica and Rajat begin to jog around a circular stadium. They complete their revolution in 42 s, 56 s and 63 s, respectively. How many seconds after will they be together at the starting point?

5

(a)

Find the least number, which when divided by 24, 32 and 36 leaves the remainder 19, 27 and 31 respectively.

5

(a)

Find the side of the largest possible square slabs which can be paired on the floor of a room 2m 50cm long and 1m 50cm broad. Also, find the number of such slabs to pair the floor.

5

(a)

6 bells are tolling together and toll of intervals are 2, 4, 6, 8, 10 and 12s, respectively. In 1 h how many times do they toll together?

5

(a)

Try arranging 18 marbles in rows and find the factors of 18

5

(a)