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Q.

The sum of two consecutive numbers is -11. Find the two numbers.

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a

-6 and-5

b

-11 and -1

c

6 and 5

d

11 and 1 

answer is A.

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Detailed Solution

Concept- Consecutive numbers are numbers that follow each other in descending order from smallest to largest.
Given data, the result of adding two digits in a row is -11.
Let us consider the first number to be a variable ‘a’, therefore the consecutive number of a is ‘a + 1’.
Now according to the given,
a + a + 1 = -11 ⟹2a + 1 = -11
⟹2a = -12
⟹a = -122
⟹a = -6, hence a + 1 = -6 + 1 = -5.
So, the two consecutive numbers are -6 and -5.
Hence, the correct option is 1.
 
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