Question

786, 663, 540, 417, 294, 171, __

Answer 1

Answer:

48

Because it is a subtraction -123

Answer 2

Next number is 48 in the series 786, 663, 540, 417, 294, 171, __

Next number is 123 less than previous number.

Tₙ   = Tₙ₋₁   - 123   where n ∈ Z , n > 1  and  T₁  = 786 or

Tₙ =  909  - 123n  where n ∈ Z , n ≥ 1

Given:

• 786, 663, 540, 417, 294, 171, __

To Find:

• Next number in the series

Solution:

Step 1:

Understand the series

786

786 - 123  =  663

663 - 123  = 540

540 - 123  =  417

417  - 123 = 294

294 - 123 = 171

Next term is 123 less than previous term

Step 2:

Apply the same logic to find next term

171 - 123  = 48

Hence , Next number is 48

Additional Info:

Defining nth Term

Tₙ   = Tₙ₋₁   - 123   where n ∈ Z , n > 1  and  T₁  = 786

or

Tₙ =  909  - 123n  where n ∈ Z , n ≥ 1

Next number is 48