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Δημοφιλή αποσπάσματα

Σελίδα 370 - The general formula for the number of combinations of n things taken r at a time is C(n,r) = r\(nr)\ We have to find the number of combinations of 12 things taken 9 at a time.
Σελίδα 250 - The square on the hypotenuse equals the sum of the squares on the other two sides.
Σελίδα 168 - If the sum of two numbers is s and their difference is d, find the numbers.
Σελίδα 54 - A polynomial is said to be arranged according to the powers of some letter when the exponents of that letter either descend or ascend in order of magnitude.
Σελίδα 321 - If equals are added to equals, the sums are equal. 3. If equals are subtracted from equals, the remainders are equal. 4. If equals are added to unequals, the sums are unequal in the same sense.
Σελίδα 90 - To solve an equation is to find the value of the unknown quantity; or, to find a number which, being substituted for the unknown quantity, will render the two members identical.
Σελίδα 193 - TJie coefficient of any term after the second is obtained by multiplying the coefficient of the preceding term by the exponent of a in that term, and dividing the product by a number greater by 1 than the exponent of b in that term.
Σελίδα 340 - Progression (AP), is a series in which each term, after the first, is formed by adding a constant number to the preceding term.
Σελίδα 345 - ... interest annually on the first of each January for 10 yrs., at 6 %. Find the total amount of principals and interest at the end of 10 yrs.
Σελίδα 10 - The part of the equation which is on the left of the sign of equality is called the first member ; the part on the right of the sign of equality, the second member.

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