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Mathematics
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A class had $14$ boys with an average height of $5.3$ feet. A new boy joined the class. Now the average of the $15$ boys in the class was $5.25$ feet. How tall was the new boy?
CBSE
Mathematics
Basics of algebra
A number consists of two digits whose sum is 9. If 27 is subtracted from the number its digits are reversed. Find the number.
CBSE
Mathematics
Basics of algebra
A positive number is $7$ times another number. If $15$ is added to both numbers then one of the new numbers becomes $\dfrac{5}{2}$ times the other new number. What are the numbers?
CBSE
Mathematics
Basics of algebra
If a + b + c = 0 then ${{a}^{3}}+{{b}^{3}}+{{c}^{3}}$ is equal to:
(a) 2abc
(b) 3abc
(c) abc
(d) 4abc
CBSE
Mathematics
Basics of algebra
What is the elapsed time between $2:16$ A.M and $8:10$ P.M ?

CBSE
Mathematics
Basics of algebra
How do you combine $9( - 7g + 6) + g?$
CBSE
Mathematics
Basics of algebra
How do you simplify the expression $15 - \dfrac{{35}}{7}.2 + 3.4$?
CBSE
Mathematics
Basics of algebra
How do you combine like terms in $\left( {5a - 9b - 2c} \right) + \left( {c - 7b - 3c} \right)$?
CBSE
Mathematics
Basics of algebra
How do you solve $\dfrac{{b + 1}}{3} = 2$?
CBSE
Mathematics
Basics of algebra
How do you simplify the expression $4g - 5g + 6 + 6g?$

CBSE
Mathematics
Basics of algebra
How do you solve for k in $k + 1 = 3k - 1$ ?
CBSE
Mathematics
Basics of algebra
How do you solve $x - 16 = - 10$?
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