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प्रश्न
Indicate the following using '+' or '−' sign: 3 km below sea level
विकल्प
+
-
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उत्तर
-
-3 km
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संबंधित प्रश्न
At Srinagar temperature was − 5°C on Monday and then it dropped by 2°C on Tuesday. What was the temperature of Srinagar on Tuesday? On Wednesday, it rose by 4°C. What was the temperature on this day?
Add: –7 + 2
Complete the table given below.
| + | 8 | 4 | –3 | –5 |
| –2 | –2 + 8 = +16 | |||
| 6 | ||||
| 0 | ||||
| –4 |
Write the opposite of the following: 5°C below the freezing point
Write five negative integers greater than −7.
Write 'T' for true and 'F' for false for the following:
0 is neither positive nor negative.
Match the items of Column I with that of Column II:
| Column I | Column II |
| (i) The additive inverse of +2 | (A) 0 |
| (ii) The greatest negative integer | (B) –2 |
| (iii) The greatest negative even integer | (C) 2 |
| (iv) The smallest integer greater than every negative integer | (D) 1 |
| (v) Sum of predecessor and successor of –1 | (E) –1 |
An atom consists of charged particles called electrons and protons. Each proton has a charge of +1 and each electron has a charge of –1. Remember number of electrons is equal to number of protons, while answering these questions:
- What is the charge on an atom?
- What will be the charge on an atom if it loses an electron?
- What will be the charge on an atom if it gains an electron?
Remembering that 1AD came immediately after 1BC, while solving these problems take 1BC as –1 and 1AD as +1.
- The Greeco-Roman era, when Greece and Rome ruled Egypt started in the year 330 BC and ended in the year 395 AD. How long did this era last?
- Bhaskaracharya was born in the year 1114 AD and died in the year 1185 AD. What was his age when he died?
- Turks ruled Egypt in the year 1517 AD and Queen Nefertis ruled Egypt about 2900 years before the Turks ruled. In what year did she rule?
- Greek mathematician Archimedes lived between 287 BC and 212 BC and Aristotle lived between 380 BC and 322 BC. Who lived during an earlier period?
Represent the following numbers as integers with appropriate signs.
A deposit of rupees two hundred.
