Question

തുടർച്ചയായി വരുന്ന 10 എണ്ണൽ സംഖ്യകളുടെ തുക 1235 എങ്കിൽ ഈ ഗണത്തിൽ വരുന്ന അടുത്ത 5 സംഖ്യകൾ


If the sum of 10 consecutive integers is 1235 then the next 5 numbers in this set​

Answer 1

Answer:

Notice that we can write the first 10 consecutive integers as follows:

1, 2, 3, 4, 5, (1 + 5), (2 + 5), (3 + 5), (4 + 5), (5 + 5)

So, the sum of the first 5 integers = 1 + 2 + 3 + 4 + 5

The sum of the last 5 integers = (1 + 5) + (2 + 5) + (3 + 5) + (4 + 5) + (5 + 5)

= 1 + 2 + 3 + 4 + 5 + 5 + 5 + 5 + 5 + 5

= 1 + 2 + 3 + 4 + 5 + 25

In other words, the sum of the last 5 numbers = (the sum of the first 5 numbers) + 25

--------NOW ONTO THE QUESTION-----------------

The same approach can be applied to the given information.

The sum of the last 5 numbers = (the sum of the first 5 numbers) + 25

= 265 + 25

= 290

Answer: A

step by step instructions:

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