निम्न प्रत्येक का सरलतम रूप ज्ञात कीजिए : (i) 15/75 (ii) 16/72 (iii) 17/51 (iv) 42/28( v) 80/24 ...

(i) cos 15^@ (ii) cos75^@ (iii) tan15^@ (iv)tan75^@

Write the following in Roman numerals: (i) 49 (ii) 69 (iii) 72 (iv) 89 (v) 98 (vi) 92

Write the place value of 2 in the following decimal numbers: ( i ) 2.56( ii) 21.37 (iii) 10.25 (iv) 9.42 (v) 63.352 .

Write each of the following as percent: 13:75 (ii) 15:16 (iii) 0.18 (iv) (7)/(125)

Find the multiple inverse or reciprocal of each of the following : (i) 18 (ii) -16 (iii) (13)/(25) (iv) (-17)/(12) (v) (-6)/(19) (vi) (-3)/(-5) (vii) -1 (viii) 0

Divide: (i) 16.46/20 (ii) 403.8/ 30 (iii) 19.2/80 (iv) 156.8 /200 (v) 12.8/500 (vi) 18.08/ 400

Find the square root of the following decimal numbers.(i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25(v) 31.36

Check whether the given fractions are equivalent: 5/9,(30)/(54) (ii) 2/7,(16)/(42) (iii) 7/(13),5/(11) (iv) 4/(11),(32)/(88) (v) 3/(10),(12)/(50) (vi) 9/(27),(25)/(75)

(i) Write down the numerator and the denominator of each of the fraction given below: (4)/(9) (ii) (6)/(11) (iii) (8)/(15) (iv) (12)/(17) (v) (5)/(1)