Find (a) `35-(20)` (b) `72-(90)` (c) `(-15) -(-18)` (d) `(-20) -(13)` (e) `23-(-12)` (f) `(-32)-(-40)`

Find (a) (-7)-8-(-25) (b) (-13)+32-8-1 (c) (-7)+(-8)+(-90) (d) 50-(-40)-(-2)

Find (a)(-7)-8-(-25) (b) (-13)+32-8-1(c)(-7)+(-8)+(-90)(d)50-(-40)-(-2)

Simplify: 10(1)/(8) of (12)/(15)-:(35)/(36) of (20)/(49)*( a) 17(5)/(12) (b) 17(8)/(17) (c) 20(3)/(25) (d) 20(103)/(250)

Evaluate: (923-347)/?=32( a) 35 (b) 20 (c) 18(d)15( e) 40

Find the difference of the following : {:(a.,23 - (7),b.,54 - (32),c.,83 - (-71)),(d.,43 - (-89),e.,39 - (-72),f.,(-89) - (-12)),(g.,(-81) - (50),h.,(-32) - (-13),,):}

A A={3,6,9,12,15,18,21},B={4,6,12,16,20},C={2,4,6,8,10,12,14,16},D={15,10,15,20} , Find : (i) A - B (ii) A-C (iii) A-D (iv) B-A (v) C-A (vi) D-A (vii) B-C (viii) B-D (ix) C-B (x) D-B (xi) C-D (xii) D-C .

Find the sum: (1)/(2)+(1)/(6)+(1)/(12)+(1)/(20)+(1)/(30)+(1)/(42)+(1)/(56)+(1)/(72)+(1)/(90)+(1)/(110)+(1)/(132)(7)/(8)( b) (11)/(12)(c)(15)/(16) (d) (17)/(18)

Write all the factors of the following numbers : (a) 24 (b) 15 (c) 21(d) 27 (e) 12 (f) 20(g) 18 (h) 23 (i) 36

Write all the factors of the following numbers : (a) 24 (b) 15 (c) 21(d) 27 (e) 12 (f) 20(g) 18 (h) 23 (i) 36

10, 5, 13, 10, 16, 20, 19, (.....) (a) 22 (b) 40 (c) 38 (d) 23