Given : 2Δ5 = 5, 2Δ3 = 3 and 8Δ4 = 16
If we replace 'Δ' with 'x', and divide the product by 2, we get the desired result.
Eg :- $$\frac{2\times5}{2}=5$$
and $$\frac{2\times3}{2}=2$$ and $$\frac{8\times4}{2}=16$$
Similarly, $$\frac{16\times8}{2}=64$$
=> Ans - (D)
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