Question

1+2^2+2^4+2^6+............+2^48=
​

Answer 1

Answer:

shown above...

Step-by-step explanation:

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Answer 2

Answer:

(4²⁵-1)/3

Step-by-step explanation:

Given GP:

• 1, 2², 2⁶, 2⁸, ..., 2⁴⁸
• a=1, r=2²=4, n=1+48/2=25
• Sₙ=?

Formula for sum:

• Sₙ =a(rⁿ -1)/(r - 1)

Considering given values:

• S₂₃=1(4²⁵-1)/(4-1)=(4²⁵-1)/3