Question

2+4+6.......+100 is equal to

Answer 1

Answer:

2550

Step-by-step explanation:

• aₙ = a + (n - 1)d
• Sₙ = n/2 × [a + l]

where l = a + (n - 1)d

→ 100 = 2 + (n - 1)(2)

→ 98/2 = n - 1

→ 50 = n

Hence there are 50 terms in A.P.

→ Sₙ = (50/2) × [2(2) + (50 - 1)2]

→ Sₙ = 25[4 + 98]

→ Sₙ = 2550

Remember

• a = First term
• n = number of terms or special placing (depends upon question)
• d = Common difference
• S = Sum

Answer 2

Answer: 2550

Step-by-step explanation: see in attachment and mark as brainliest plz