Question 72 (a)
Find the value of 70
For any rational number a, a0=1 ∴70=1
Question 72 (c)
Find the value of (−7)2×7−6−8
Question 72 (f)
Find the value of (80−20)×(80+20)
Question 72 (d)
Find the value of (20+30+40)(40−30−20)
Question 72 (b)
Find the value of 77÷77
Question 72 (e)
Find the value of 2×3×4÷20×30×40