Question

Q1.Which of the following is the additive inverse of – 27 ?
(i)--27           (ii)  27(iii)  0 (iv) 1
Q2.Which of the following is the value of (--12)x(--2)x(--5) ?
(i)--120         (ii)  120(iii)  0 (iv) 1
Q3.Which of the following is the value of (--4)x [ (--5)+ (--3)] ?
(i)--32         (ii)  120(iii) 32 (iv)–23
Q4.A shop keeper makes a profit of Rs.5 on each pen & incurs a loss of Rs. 2 on each pencil box. What will be his net profit if he sells ten pens & ten pencil boxes?
(i)20         (ii)  30      (iii) 50 (iv) 100
Q5.Which of the following is the simplest form of [ (--5)+ (--7)]/ [(--2) + (-- 1)] ?
(i)--12         (ii)  12      (iii) 4 (iv)--4​

Answer 1

Answer:

$1)27$

Step-by-step explanation:

$(12) \times ( - 2) \times ( - 5) \\ 12 \times - 2 \times - 5 \\ - 24 \times - 5 \\ - 120$

Answer 2

Ans 1. (ii) 27
Ans 2. (i) - 120
Ans 3. (iii) 32
Ans 4.
Ans 5.

Sorry don’t know the answers of Q4 and Q5