Question

Identify the $3-$digit number using the given rules.
Rule 1: The digit in hundreds place is the biggest digit.
Rule 2: The digit in tens place is the same as the digit in hundreds place.
Rule 3: The digit in ones place is $2$ less than the digit in tens place.

• A. $664$
• B. $999$
• C. $886$
• D. $997$

Answer 1

The correct option is D $997$

Say:
Rule 1: The digit in hundreds place is the biggest digit.
Rule 2: The digit in tens place is the same as the digit in hundreds place.
Rule 2: The digit in ones place is $2$ less than the digit in tens place.
Let us find the 3-digit number formed using the given rules.
Step:
The biggest digit is $9.$
Let's use $9$ in hundreds place.
The digit at tens place is the same as that in hundreds place.
So, the digit at tens place is also $9.$
The digit at ones place is 2 less than the digit in tens place.
So, $9–2=7$
So, the number $=9$ hundreds $+9$ tens $+7$ ones $=900+90+7=997$
Hence, option C is the correct answer.