Which of the following pairs are isobars ?
(i) `._(26)^(58)A, ._(28)^(58)B`
(ii) `._(35)^(79)X,._(35)^(80)Y`
Give reasons for your choice.

Which of the following pairs are isotopes ? Give reasons for your choice : (i) ._(26)^(58)A,._(28)^(58)B or (ii) ._(35)^(79)X,._(35)^(80)Y .

Which of the following pairs are co-prime? (i)18 and 35, (ii) 216 and 215

Which of the following symbols are not acceptable ? (i) ._(35)^(79)Br (ii) .^(79)Br (iii) ._(79)^(35)Br (iv) ._(35)Br

Convert the following decimals as fractions: (i)2.3675 (ii) 54.26 (iii) 75.35 (iv) 0.7575

The four atomic species can be represented as follows. Out of these, the two species which can be termed isobars are : (i) ._(60)^(201)X (ii) ._(61)^(200)X (iii) ._(58)^(200)X (iv) ._(60)^(203)X .

Which of the following pairs are co-prime ? i. 18 and 35 ii. 216 and 215 iii. 30 and 415 iv. 17 and 68

Which of the following expressions are polynomials in one variable and which are not ? Give reasons for your answer. x^(100)+y^(100)

Which of the following triplets are Pythagorean? (I) (8,\ 15 , 17) (ii) (18 ,\ 80 , 82) (iii) (14 , 48 , 51) (iv) (10 , 24 , 26) (16 , 63 , 65) (vi) (12 , 35 , 38)