Answer:
3
Step-by-step explanation:
Using listing:


No other factors are possible.
Hence, 1, 3, 7 and 21 are factors of 21.
Negative. It’s the only one that makes since. ( probably)
Answer:
A
C
Step-by-step explanation:
A and C gives same result....
Answer:
P = 0.05
Step-by-step explanation:
E = P4πr²
2.50 = P4π(2)²
2.50 = P4π4
2.50 = P(50.265)
P = 0.05
Answer:
Rs.16
Step-by-step explanation:
Divide the cost of Rs.96 by 12 then multiply by 2
cost of 1 pencil = Rs.96 ÷ 12 = Rs.8
cost of 2 pencils = 2 × Rs.8 = Rs.16