Least or smallest natural number is 1.
The squares: 1, 4, 9, 16, 25
A natural number is doubled when added to its reciprocal. Find that number!
Yes, the number zero. Currently, the natural numbers are normally taken to start with zero, not with one (this was not always so). The number zero has no predecessor in the set of natural numbers. In the set of integers, however, every number has a predecessor and a successor.
Sum of two rational numbers might be a natural number (1/2 + 1/2), but mostly it's just another rational number (1/2 + 1/3). So answer is no.
30 squares within a 1 unit grid. 30 squares in all: 4*4 square: 1 3*3 squares: 4 2*2 squares: 9 1*1 squares: 16
Assuming each of the smallest squares (i.e., each of the 16 ones forming the large square) has a side 1 unit long: There are 16 squares that are 1x1. There are 9 squares that are 2x2. There are 4 squares that are 3x3. And there is 1 square that is 4x4. So the total number of squares is 30.
There are infinitely many, just like in base 10. In any base system, the number of perfect squares is the same. Take the natural (counting) numbers 1, 2, 3, .... Squaring each of these produces the perfect squares. As there are an infinite number of natural numbers, there are an infinite number of perfect squares. The first 10 perfect squares in base 5 are: 15, 45, 145, 315, 1005, 1215, 1445, 2245, 3115, 4005, ...
The sum of the squares of the first 20 natural numbers 1 to 20 is 2,870.
Infinitely many, but only 30 squares within a 1 unit grid. 4*4 square: 1 3*3 squares: 4 2*2 squares: 9 1*1 squares: 16
itself
16 Answer #2 It is 16 if you just count the 1 x 1 squares but the 16 squares also form a 4x4 square. There are also 2x2 squares and 3x3 squares in the pattern. 16 1x1 squares 9 2x2 squares 4 3x3 squares 1 4x4 square 30 squares (possibly more?)
12:1
The Hollywood Squares - 1965 1-117 was released on: USA: 30 March 1967
The Hollywood Squares - 1965 1-160 was released on: USA: 30 May 1967
The Hollywood Squares - 1965 1-183 was released on: USA: 30 June 1967
The Hollywood Squares - 1965 1-226 was released on: USA: 30 August 1967