CBSE Class 7 Mathematics (Demo)

If $$\mathrm{a}=-{117} {\mathrm{~b}}, {\mathrm{~b}}=83$$, then $$[|\mathrm{a}|+|\mathrm{b}|] \times[|\mathrm{a}|-|{\mathrm{b}}|]$$ is

If $$a+(-8)=-17,6+b=3$$, then $$\frac{(a+b+a \times b)}{(a-b)}$$ is

If $$X=8, Y=-5, A=-9, B=5, C=7$$ and $$D=-4$$, then $$(X \times Y) \times[(A+B)+(C-D)]$$ is

If $$a<b$$, then

If $$a=(-3)+(-9), b=8+(-4), c=(-3)-(-4), d=5 \times-4$$, then $$[a \times b \times(c-d)]$$ of $$(a+b)$$ is

If $$p$$ is the multiplicative identity of -12 and $$q$$ is additive inverse of -16 , then the value of $$(p+q) \times[(-12)+(-16)] \times[(-16)-(-12)]$$ is

If the sum of first 6 multiples of 3 is subtracted from the sum of first 10 multiples of 3 , then the result is a multiple of

If $$a \in Z, b \in Z$$, then ( $$a-b$$ ) always belongs to

If $$X=[(+2)+(-4)]+[(-9)+(+5)], Y=[(-9)+(+3)]+[(-2)+(-4)]$$, then the value of $$(X+Y) \times(X-Y)+[(X+Y)-(X-Y)]$$ is

If $$\mathbf{Z}^{+}, Z^{-}$$are two infinite sets, then the intersection of both the sets is a/an

If $$\frac{3}{5}$$ of $$\frac{2}{3}$$ is added to -1 , then the resultant is

If $$\frac{2}{3}+\frac{3}{4}=x$$ and $$\frac{5}{6}+\frac{3}{8}=y$$, then $$x-y$$ is

If $$2 \frac{1}{2}+7 \frac{1}{2}=x$$, then $$\left(x+\frac{1}{x}\right) \div \frac{1}{x}$$ is

If $$3 \frac{1}{4}+2 \frac{1}{6}-3 \frac{1}{2}$$ is $$\frac{2^{\text {rd }}}{3}$$ of $$x$$, then the value of $$x$$ is

If $$\frac{c}{d}=1 \div \frac{3}{4}$$, then $$\frac{5}{6}+\frac{c}{d}$$ is

If $$\frac{7}{a}+\frac{5}{a}=6, \frac{4}{b}+\frac{8}{b}+\frac{6}{b}=3 ; \frac{4}{c}+\frac{8}{c}+\frac{3}{c}=5$$, then $$\frac{a}{b}+\frac{b}{c}-\frac{c}{a}$$ is

If $$x=\frac{2}{3}$$ of $$\frac{3}{4}, y=\frac{3}{4}$$ of $$\frac{8}{12}$$, then $$(x+y)+(x-y) \quad$$ is

If a fraction is subtracted from $$\frac{13}{12}$$ the answer is $$\frac{11}{24}$$, then the fraction is

If a fraction is added to $$2 \frac{8}{15}$$ the answer obtained is $$3 \frac{7}{10}$$, then the fraction is

If $$\frac{2}{3}+\frac{3}{4}=\frac{15+\mathrm{a}}{12} ; \frac{3}{4}+\frac{5}{6}=\frac{12+\mathrm{b}}{12}$$; then $$\frac{\mathrm{a}}{\mathrm{b}}+\frac{\mathrm{b}}{\mathrm{a}}$$ is

If $$\frac{3}{x} \times \frac{8}{6} \times \frac{12}{9}=\frac{4}{3}$$ and $$\frac{2}{7} \times \frac{y}{9} \times \frac{27}{4}=3$$, then $$\frac{x}{y}$$ is a reciprocal of

If $$\left(12 \div \frac{1}{3}\right) \times\left(\frac{16}{7} \div 4\right) \times\left(\frac{5}{4} \times \frac{8}{15}\right)=x$$ and $$y=\frac{56}{48}$$, then $$x \times y$$ is

If $$\left(\frac{7}{15}\right.$$ of $$\left.\frac{5}{21}\right)$$ is divided by $$\left(\frac{3}{4} \div \frac{6}{16}\right)$$, then the resultant divisor is

$$\left(\frac{1}{4} \text { of } 2 \frac{2}{7}\right)$$ when multiplied by $$6 \frac{3}{10} \times 2 \frac{1}{7} \times \frac{35}{9}$$ gives $$x$$. If $$y=\frac{5}{6}$$, then $$x \div y$$ is

$$x$$ and $$y$$ are reciprocals of $$\frac{5}{6}$$ and $$\frac{3}{4}$$. If $$(x \div y)$$ of $$x \times y=z$$, then the value of $$z$$ is