| Symbol |
Name of the Symbol |
Meaning |
Example |
| = |
Equal sign |
Equality |
10 = 5+5 |
| ≠ |
Not equal sign |
Inequality |
10 ≠ 5 |
| ≅ |
Approximately |
Approximation |
π ≅ 3.14 |
| > |
Strict inequality |
Greater than |
10 > 9 |
| < |
Strict inequality |
Less than |
9 < 10 |
| ≥ |
Inequality |
Greater than or equal to |
10 ≥ 9; or p ≥ q |
| ≤ |
Inequality |
Less than or equal to |
9 ≤ 10; or p ≤ q |
| ( ) |
paranthesis |
grouped items. need to be calculated first. |
5 x (1 + 2) = 5 x 3 = 15 |
| [ ] |
brackets |
grouped items. need to be calculated first. |
[ (5 + 1) x (1 + 2)] = 18 |
| ∓ |
plus - minus |
both plus and minus operator |
2 ∓ 1 = 3 or 1 |
| mod |
modulo |
remainder calculation |
5 mod 2 = 1 |
| ab |
power |
exponent |
13 = 1 |
| a^b |
caret |
exponent |
2 ^ 3 = 8 |
| √a |
square root |
√a . √a = a |
√4 = 2 |
| 3√a |
cube root |
√a . √a . √a = a |
3√8 = 3 |
| 4√a |
nth root |
|
if n = 3; 3√8 = 2 |
| ‰ |
per-mille |
1‰ = 1/1000 = 0.1% |
10‰ of 10 = 0.3 |
| ppm |
per-million |
1ppm = 1/10,00,000 |
0.000001 |