Tamil Nadu Board Solutions for Chapter: Number System, Exercise 16: Exercise 1.6

An integer divided by $7$ gives a result $-3$. What is that integer?

Find the missing integer.

$72+(-5)-[?]=72$

If $P=-15$ and $Q=5$, then find $(P-Q)÷(P+Q)$.

If the letters in the English alphabets $A$ to $M$ represent the number from $1$ to $13$ respectively and $N$ represents $0$ and the letters $O$ to $Z$ correspond from $-1$ to $-12,$ find the sum of integers for $YOUR NAME$.

For example, $MATH$ $\to Sum\to 13+1-6+8=16$

If the letters in the English alphabets $A$ to $M$ represent the number from $1$ to $13$ respectively and $N$ represents $0$ and the letters $O$ to $Z$ correspond from $-1$ to $-12,$ find the sum of integers for $SUCCESS$.

For example, $MATH$ $\to Sum\to 13+1-6+8=16$

From a water tank $100 \mathrm{L}$ of water is used every day. After $10$ days there is $2000 \mathrm{L}$ of water in the tank. How much water(in $\mathrm{L}$) was there in the tank before $10$ days?

A dog is climbing down into a well to drink water. In each jump it goes down $4$ steps. The water level is in ${20}^{th}$ step. The number of jumps the dog took to reach the water level is?

Kannan has a fruit shop. He sells $1$ dozen banana at a loss of $₹2$ each because it may get rotten next day. What is his loss in a day?