126
52 and 40
Ordinal numbers
First, Second, Third, Fourth, Fifth, Sixth, Seventh, Eighth, Ninth, Tenth
Fifth is Ordinal (tellls the "order" something is in..i.e.first, second, etc.)
Take a look on the numbers which are on the position of second, fourth, sixth(i.e. multiples of 2) and so on and take a look on the left and right side of these numbers, there is a relation:- First number is three times of second number and third number is four times of second number. The same relation is of fourth number with third and fifth. So, seventh number is 80 x 4 = 320.
Some number x is added to 7 for every number in the sequence. So, the second number is 7+x, the third number is 7+2x... So the tenth number is 7+9x = 34. Solve for x, x=3. The fifth number is 7+4x, which is 7+(4*3), which is 19
40 and 52
Ordinal numbers
126
First, Second, Third, Fourth, Fifth, Sixth, Seventh, Eighth, Ninth, Tenth
60
The ordinal numbers in English, followed by their French language equivalents: First: premier / première Second: deuxième (or second) Third: troixième Fourth: quatrième Fifth: cinquième Sixth: sixième Seventh: septième Eighth: huitième Ninth: neuvième Tenth: dixième Of note is the fact that, from one-fifth and beyond, the fractional numbers (such as one fifth) are identical to the corresponding ordinal numbers (such as fifth). Therefore, one-fifth is translated as "un cinquième".
Fifth is Ordinal (tellls the "order" something is in..i.e.first, second, etc.)
Take a look on the numbers which are on the position of second, fourth, sixth(i.e. multiples of 2) and so on and take a look on the left and right side of these numbers, there is a relation:- First number is three times of second number and third number is four times of second number. The same relation is of fourth number with third and fifth. So, seventh number is 80 x 4 = 320.
The sum of four numbers equals 40: a+b+c+d=40 Those same four numbers, along with another number (e), give the set a mean of 12: (a+b+c+d+e)/5=12 Use these two facts to determine e as follows: (a+b+c+d+e)/5=12 a+b+c+d+e=60 (a+b+c+d)+e=60 40+e=60 e=20
"Forth" does not belong because the other words are ordinal numbers (First, Second, Third, Fifth) while "Forth" is a misspelling of "Fourth."
A set of five numbers, the second to fifth of which are the same.
83