What is the name of the mathematical concept that describes a value that never changes, like the ratio of a circle's circumference to its diameter? [#1259]

A constant is a mathematical concept that represents a value that remains unchanged, like pi (π), which is approximately 3.14 and never changes.

---

A constant is a mathematical concept that represents a value that remains unchanged, like pi (π), which is approximately 3.14 and never changes.

With a height of 260.5 m (855 ft) Tehri Dam is the tallest dam in India and 13th tallest dam in the world. It is a multi-purpose rock and earth-fill embankment dam on the Bhagirathi River in New Tehri, Tehri Garhwal district in Uttarakhand, India.

---

With a height of 260.5 m (855 ft) Tehri Dam is the tallest dam in India and 13th tallest dam in the world. It is a multi-purpose rock and earth-fill embankment dam on the Bhagirathi River in New Tehri, Tehri Garhwal district in Uttarakhand, India.

Allahabad Pillar Inscription

---

Allahabad Pillar Inscription

Thе Golden Ball Award is an annual football award prеsеntеd by Frеnch nеws magazinе Francе Football since 1982. It is awardеd to thе bеst playеr at еach FIFA World Cup finals.

---

Thе Golden Ball Award is an annual football award prеsеntеd by Frеnch nеws magazinе Francе Football since 1982. It is awardеd to thе bеst playеr at еach FIFA World Cup finals.

Transpiration is the process by which plants transport water and minerals from the roots to the leaves, where it is used for photosynthesis and other metabolic processes. Excess water is released into the air as water vapor through tiny openings called stomata.

---

Transpiration is the process by which plants transport water and minerals from the roots to the leaves, where it is used for photosynthesis and other metabolic processes. Excess water is released into the air as water vapor through tiny openings called stomata.

$\frac{X}{3}=\frac{Y}{4}=\frac{Z}{7}$ Hence, X:Y:Z = 3:4:7 $\frac{X+Y+Z}{Z}$ = $\frac{3+4+7}{7}$ = $\frac{14}{7}$ = 2

---

$\frac{X}{3}=\frac{Y}{4}=\frac{Z}{7}$ Hence, X:Y:Z = 3:4:7 $\frac{X+Y+Z}{Z}$ = $\frac{3+4+7}{7}$ = $\frac{14}{7}$ = 2

Knockdown and Knockout are the terminology of boxing. A knockdown happens when a boxer tumbles to the ground of the boxing ring as a result of a blow from the rival. A knockout is an automatic win for the opponent, and refers to a player being knocked down for more than 10 seconds. The referee will start counting down from 10 once a player has been knocked down, and the player has to regain his position in order to continue the round.

---

Knockdown and Knockout are the terminology of boxing. A knockdown happens when a boxer tumbles to the ground of the boxing ring as a result of a blow from the rival. A knockout is an automatic win for the opponent, and refers to a player being knocked down for more than 10 seconds. The referee will start counting down from 10 once a player has been knocked down, and the player has to regain his position in order to continue the round.

Substitute Word: pioneer. A pioneer is someone who is among the first people to explore or settle a new country or area.

---

Substitute Word: pioneer. A pioneer is someone who is among the first people to explore or settle a new country or area.

Goecha La pass is located in the Gyalshing district of Sikkim, India, at an altitude of 16,207 ft (4,940 m) in the Himalayan range. The pass is close to the Nepal border and offers views of the southeast face of Kanchenjunga, the world's third highest mountain. It's also a base camp for people who want to climb the mountain.

---

Goecha La pass is located in the Gyalshing district of Sikkim, India, at an altitude of 16,207 ft (4,940 m) in the Himalayan range. The pass is close to the Nepal border and offers views of the southeast face of Kanchenjunga, the world's third highest mountain. It's also a base camp for people who want to climb the mountain.

137

---

137

Plate tectonics is the theory that the Earth's outer layer is divided into large plates that move relative to each other, creating and destroying landforms, oceans, and continents over millions of years.

---

Plate tectonics is the theory that the Earth's outer layer is divided into large plates that move relative to each other, creating and destroying landforms, oceans, and continents over millions of years.