Answer:
8
Step-by-step explanation:
We will solve this question by using indirect method of solving questions:
1st condition of this question is:. yen's digit is 2 more than the unit's digit
in 2 digits numbers their are 8 numbers which obey this rule: 20,31,42,53,64,75,86,97.
after reading second condition , there is only 1 number , that is 42 that obey this rule .
so, 8 is the answer
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Answers & Comments
Answer:
8
Step-by-step explanation:
We will solve this question by using indirect method of solving questions:
1st condition of this question is:. yen's digit is 2 more than the unit's digit
in 2 digits numbers their are 8 numbers which obey this rule: 20,31,42,53,64,75,86,97.
after reading second condition , there is only 1 number , that is 42 that obey this rule .
so, 8 is the answer