Advertisements
Advertisements
प्रश्न
A dog is climbing down into a well to drink water. In each jump, it goes down 4 steps. The water level is in 20th step. How many jumps does the dog take to reach the water level?
Advertisements
उत्तर
The water in the well is at 20th step
For each jump, the dog goes low 4 steps.
∴ Number of jumps the dog to reach the water = `20/4`
= 5 jumps
APPEARS IN
संबंधित प्रश्न
A poet Tamizh Nambi lost 35 pages of his ‘lyrics’ when his file had got wet in the rain. Use integers, to determine the following.
If Tamizh Nambi wrote 5 pages per day, how many day’s work did he lose?
An atom can contain protons which have a positive charge (+) and electrons which have a negative charge (−). When an electron and a proton pair up, they become neutral (0) and cancel the charge at. Now determine the net charge:
6 protons and 6 electrons →
An atom can contain protons which have a positive charge (+) and electrons which have a negative charge (−). When an electron and a proton pair up, they become neutral (0) and cancel the charge at. Now determine the net charge:
7 protons and 6 electrons →
Scientists use the Kelvin scale (K) as an alternative temperature scale to degrees Celsius (°C) by the relation T°C = (T + 273)K. Convert the following to Kelvin:
45°C
Find the amount that is left in the student’s bank account, if he has made the following transaction in a month. His initial balance is ₹ 690
(i) Deposit (+) of ₹ 485
(ii) Withdrawal (−) of ₹ 500
(iii) Withdrawal (−) of ₹ 350
(iv) Deposit (+) of ₹ 89
(v) If another ₹ 300 was withdrawn, what would the balance be?
A poet Tamizh Nambi lost 35 pages of his ‘lyrics’ when his file had got wet in the rain. Use integers, to determine the following:
If Tamizh Nambi is paid ₹ 250 for each page produced, how much money did he lose?
Buddha was born in 563 BC (BCE) and died in 483 BC (BCE). Was he alive in 500 BC (BCE)? and find his life time. (Source: Compton’s Encyclopedia)
Match the statements in Column A and Column B
| S.No. | Column A | Column B |
| 1. | For any two integers 72 and 108, 72 + 108 is also an integer. | (a) Distributive property of multiplication over addition. |
| 2. | For any three integers 68, 25 and 99 68 × (25 + 99) = (68 × 25) + (68 × 99) |
(b) Multiplicative identity |
| 3. | 0 + (−138) = (−138) = (−138) + 0 | (c) Commutative property under |
| 4. | For any two integers (−5) and 10 (−5) × 10 = 10 × (−5) |
(d) Closed under addition. |
| 5. | 1 × (−1098) = (–1098) = (–1098) × 1 | (e) Additive identity. |
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 the names given below.
For example,
MATH → Sum → 13 + 1 – 6 + 8 = 16
YOUR NAME
A submarine was situated at 650 feet below the sea level. If it descends 200 feet, what is its new position?
