Question

1. Find the HCF of the following (the numbers are given in the prime factorisation form):
2 * 2 * 3 * 3 * 17 and 2 x 3 x 17
b. 2 x 2 x 3 x 3 x 11 and 2 x 2 7 11 x 11
2. Find the HCF of the following numbers by listing their factors:
18 and 24
b. 15 and 40
c. 32, 36, and 40 d. 24, 36, and 84
3. Find the HCF of the following numbers by prime factorisation:
a. 513, 783
b. 91, 135, 189 c. 147, 63, 84 d. 140, 160, 240
4. Find the HCF of the following numbers by division method:
a. 880, 1375
b. 225, 350
c. 1305, 1365, 1530 d. 580, 1160, 1740
5. What is the HCF of two (a) odd numbers and (b) even numbers?
6. What is the greatest number that will divide 2,930 and 3,250 leaving the remainder 2?
7. Find the greatest number that divides 6,743 and 9,077 leaving no remainder.
8. There are 416, 364, and 312 students in Classes IV, V, and VI, respectively in a school. Buses are
hired to take these students for a picnic. Find the maximum number of students who can sit in a bus
if each bus carries an equal number of students.
9. Find the length of the side of the largest square tile which can be used to cover a floor 252 cm by
216 cm without leaving any gap.
10. The length, breadth, and height of a hall is 3675 cm, 2100 cm, and 1050 cm respectively. Find the
longest length of a tape which can measure the length, breadth, and height of the hall?
11. Two tankers contain 299 litres and 391 litres of kerosene oil, respectively. Find the maximum
capacity of a container which can measure the oil of either of the tankers in the exact number
of times.​

Answer 1

Answer:

$7xy5 \sqrt{ = = < 306 \times \frac{?}{?} }$