In the following APs, find the missing terms in the box:
`-4, square, square, square, square, 6`

In the following A.P.'s, find the missing terms in the boxes.

In the following APs, find the missing terms in the boxes : (i) 2,square,26 (ii) square,13,square,3 (iii) 5,square,square,(1)/(2) (iv) -4,square,square,square,square,6 (v) square,38,square,square,square,-22

Find the missing numbers 4:5 = square : 20 =40: square = square :100

Find the missing numbers: 7:9 =square :18=42 :square = square :27

Fill in the missing numbers: 4:5 = 32: square = square : 20 = 8: square

Find in the missing numbers 50:70 = 5: square = square :28=10: square Are these ratios equivalent ?

Fill in the boxes : 4/(square)=28/(35)

Look at the following matchstick pattern of squares. The squares are not separate. Two neighboring squares have a common matchstick. Observe the patterns and find the rule that gives the number of matchsticks in terms of the number of squares. (Hint: If you remove the vertical stick at the end, you will get a pattern of Cs.)

Find the square roots of the following: -i

The length of side of a square is 'a' metre. A second square is formed by joining the middle points of this square. Then a third square is formed by joining the middle points of the sides of the second square and so on. Then, the sum of the areas of squares which carried upto infinity, is