Banno and Binod were playing a guessing game by writing clues about a secret number. Each tried to guess the other’s secret number from the clues. Can you guess their secret number?

• It is larger than half of $100$
• It is more than $6 \mathrm{tens}$ and less than $7 \mathrm{tens}$
• The tens digit is one more than the ones digit
• Together the digits have a sum of $11$.

Banno and Binod were playing a guessing game by writing clues about a secret number. Each tried to guess the other’s secret number from the clues. Can you guess their secret number?

• It is smaller than half of $100$.
• It is more than $4 \mathrm{tens}$ and less than $5 \mathrm{tens}$.
• The tens digit is two more than the ones digit.
• Together the digits have a sum of $6$.

Take any number and double it now multiply the result by $5$ and then finally divide the answer by $10$. Find the surprise number.

Follow the following and find the surprise number.

Take any number $=\_\_\_\_$

Double it $=\_\_\_\times 2=\_\_\_$

Again double it $=\_\_\_\times 2=\_\_\_$

Add the number you took first to the answer $=\_\_\_+\_\_\_=\_\_\_$

Now again double it $=\_\_\_\times 2=\_\_\_$

Divide by $10=\_\_\_\_÷10=\_\_\_$

Look at this pattern of numbers and take it forward.

$1$ $=$ $1\times 1$

$121$ $=$ $11\times 11$

$12321$ $=$ $111\times 111$

$1234321=\mathrm{}?\mathrm{}$