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taurus [48]
3 years ago
8

Akhil and Sonu are friends who study in the same school who attended their Assessment test, after they get their results, Akhil

and
Sonu compared their scores. His friend Sonu claims that his score is a two-digit number, the sum of the digits of which is 14. The
number formed on reversing the digits of this number is 36 less than the number.
Read the paragraph carefully and answer the below question:
11.
1) What is the digit in the unit's place originally? help plsss
Mathematics
1 answer:
WARRIOR [948]3 years ago
8 0

Answer:

digit in the unit's place originally = 5

Step-by-step explanation:

x + y = 14

xy - yx = 36

Now, the only single digits that sum up to 14 are;

9 + 5 = 14

8 + 6 = 14

We can't use 7 + 7 because they said there is a difference when the numbers are reversed.

Now, let's assume 95 is the original number since we are told when it is reversed it is lesser.

Thus, when reversed we have 59.

Difference = 95 - 59 = 36

Thus,unit number of original number = 5

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Let X be the national sat score. X follows normal distribution with mean μ =1028, standard deviation σ = 92

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P(Z > 1.87) = 1 - 0.9693

P(Z > 1.87) = 0.0307

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