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  2. 4-Digits - Wikipedia

    en.wikipedia.org/wiki/4-Digits

    These 4D operators are known as Number Forecast Operators. Malaysia 4D draws daily and some on every Wednesday, Saturday and Sunday, which coincide with Singapore's 4D draw. However, sometimes, there will be a special draw on Tuesday. Magnum 4D offers the classic 4D game – the player picks a 4 digit number and chooses the amount he wants to bet.

  3. Digit ratio - Wikipedia

    en.wikipedia.org/wiki/Digit_ratio

    Researcher Marta Kowal states: "One of the general limitations of studies on the digit ratios is the high number of degrees of freedom within the 2D:4D (the right, left, and right minus left 2D:4D). Running many analyses with different predictors increases the chances of finding allegedly significant results." [4]

  4. Complex number - Wikipedia

    en.wikipedia.org/wiki/Complex_number

    Complex number. A complex number can be visually represented as a pair of numbers (a, b) forming a vector on a diagram called an Argand diagram, representing the complex plane. Re is the real axis, Im is the imaginary axis, and i is the "imaginary unit", that satisfies i2 = −1. In mathematics, a complex number is an element of a number system ...

  5. Four-dimensional space - Wikipedia

    en.wikipedia.org/wiki/Four-dimensional_space

    Four-dimensional space (4D) is the mathematical extension of the concept of three-dimensional space (3D). Three-dimensional space is the simplest possible abstraction of the observation that one needs only three numbers, called dimensions, to describe the sizes or locations of objects in the everyday world.

  6. Toto (lottery) - Wikipedia

    en.wikipedia.org/wiki/Toto_(lottery)

    Toto (lottery) Toto. Region. Singapore. Website. www.singaporepools.com.sg. Toto (est. in 1968 and stylised as TOTO) is a legalised form of lottery sold in Singapore, known by different names elsewhere. It is held by Singapore Pools, the only legal lottery operator in Singapore. [2] As of April 2015, it was the second most popular type of ...

  7. Four-gradient - Wikipedia

    en.wikipedia.org/wiki/Four-gradient

    Four-gradient. In differential geometry, the four-gradient (or 4-gradient) is the four-vector analogue of the gradient from vector calculus. In special relativity and in quantum mechanics, the four-gradient is used to define the properties and relations between the various physical four-vectors and tensors.

  8. Quaternions and spatial rotation - Wikipedia

    en.wikipedia.org/wiki/Quaternions_and_spatial...

    The representation of a rotation as a quaternion (4 numbers) is more compact than the representation as an orthogonal matrix (9 numbers). Furthermore, for a given axis and angle, one can easily construct the corresponding quaternion, and conversely, for a given quaternion one can easily read off the axis and the angle.

  9. Singapore Pools - Wikipedia

    en.wikipedia.org/wiki/Singapore_Pools

    On 29 September 2016, the Ministry of Home Affairs announced that Singapore Pools would be granted an exemption under the Remote Gambling Act 2014, allowing it to offer online and telephone gambling for 4D and TOTO lotteries, football and motor-racing, subject to strict regulatory conditions and safeguards to prevent illegal gambling activities.