1.Which interchange of signs will make the following equation correct? (D)
(8 – 8) + 8 × 32 = 64
A. ×, +, –
B. –, ÷, +
C. +, ÷, +
D. +, ÷,×
2.In the certain code language if ‘-‘ means ‘x’ ‘+’ means’/’ ‘/’ means ‘+’ and ‘x’ means ‘-‘ then answer the following questions. (B)
16 x 12/18 + 24 – 8
A. 8
B.10
C.11
D.14
3.450 + 30/392 + 28 X 1250 +50 (C)
A.44
B.14
C. 4
D. 24
4. If + stands for division; × stands for addition; – stands for multiplication; ÷ stands for subtraction, which of the following is correct? (A)
1. 15 ÷ 5 × 2 – 6 + 3 = 28
2. 15 × 5 + 2 – 6 ÷ 3 = 56.5
3. 15 + 5 – 2 ÷ 6 × 3 = 3
4. 15 – 5 + 2 × 6 ÷ 3 = 41
A. 3
B. 1
C. 2
D. 4
5.If ‘×’ means ‘addition’, ‘–’ means ‘division’, ‘÷’ means subtraction and ‘+’ means ‘multiplication’, then which of the following equations is correct? (A)
A. 16 + 5 – 10 × 4 ÷ 3 = 9
B. 16 – 5 × 10 ÷ 4 + 3 = 12
C. 16 + 5 ÷ 10 × 4 – 3 = 9
D. 16 × 5 ÷ 10 ÷ 4 – 3 = 19