18 x 15 - 50/ (40 x 80) divide 160 = ? (a) 20 (b) 8.5 (c) 11.5 (d) 22 (e) None of these

(c) ?/46x16=368 ?=368x46/16=1058

(a) ?= 351/6x0.5=117

(d) 18x?=7776/12 ?=7776/12x18=36

(e) ?=11x55/5+9 = 121 + 9 = 130

(e) 59475/√?=195x5 √?=59475/195*5=61 61 × 61 = 3721

(b) ?2 = (142 – 132) ÷ 3 = (14 + 13) (14 – 13) ÷ 3 =27×1/3=9 ? = 9 = 3

(c) ?= √1296 divide √36 =36 divide 6 =6

(c) 112 ÷ 7 ÷ 4 = 8 × ? 8 x ?= 112/7x4 ?=4/8=1/2=0.5

(d) ? = 18 + 17 x 3-1/8-15 divide 3-1 =15+51-1/ 8-5-1 =68/2 =34

(d) ? = 1256 ÷ (32 × 0.25) = 1256 ÷ 8 = 157