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JEE Advanced

The total number of compounds having at least one bridging oxo group among the molecules given below is ____. $N_{2}O_{3},N_{2}O_{5},P_{4}O_{6},P_{4}O_{7},H_{4}P_{2}O_{5},H_{5}P_{3}O_{10},H_{2}S_{2}O_{3},H_{2}S_{2}O_{5}$

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A debate club consists of 6 girls and 4 boys. A team of 4 members is to be selected from this club including the selection of a captain (from among these 4 members) for the team. If the team has to include at most one boy, then the number of ways of selecting the team is

For a point $P$in the plane, let $d_{1}(P)andd_{2}(P)$be the distances of the point $P$from the lines $x−y=0andx+y=0$respectively. The area of the region $R$consisting of all points $P$lying in the first quadrant of the plane and satisfying $2≤d_{1}(P)+d_{2}(P)≤4,$is

Let n be the number of ways in which 5 boys and 5 girls can stand in a queue in such a way that all the girls stand consecutively in the queue. Let m be the number in which 5 boys and 5 girls stand in such a way that exactly four girls stand consecutively in the queue. Then the value of $nm $ is ____

The function $y=f(x)$ is the solution of the differential equation $dxdy +x_{2}−1xy =1−x_{2} x_{4}+2x $ in $(−1,1)$ satisfying $f(0)=0.$ Then $∫_{23}f(x)dx$ is

Let $f:[21 ,1]→R$ (the set of all real numbers) be a positive, non-constant, and differentiable function such that $f_{prime}(x)<2f(x)andf(21 )=1$ . Then the value of $∫_{21}f(x)dx$ lies in the interval (a)$(2e−1,2e)$ (b) $(3−1,2e−1)$(c)$(2e−1 ,e−1)$ (d) $(0,2e−1 )$

Let $s,t,r$be non-zero complex numbers and $L$be the set of solutions $z=x+iy(x,y∈R,i=−1 )$of the equation $sz+tz+r=0$, where $z=x−iy$. Then, which of the following statement(s) is (are) TRUE?If $L$has exactly one element, then $∣s∣=∣t∣$(b) If $∣s∣=∣t∣$, then $L$has infinitely many elements(c) The number of elements in \displaystyle{\Ln{{n}}}{\left\lbrace{z}\right|}{z}-{1}+{i}{\mid}={5}{\rbrace}is at most 2(d) If $L$has more than one element, then $L$has infinitely many elements

If the line $x=α$divides the area of region $R={(x,y)R_{2}:x_{3}≤x,0≤x≤1}$into equal parts, then: $2α_{4}−4α_{2}+1=0$ $α_{4}+4α_{2}−1=0$$0<α≤21 $ (d) $21 <α<1$

Let $g:R→R$ be a differentiable function with $g(0)=0,g_{′}(1)=0,g_{′}(1)=0$.Let $f(x)={∣x∣x g(x),0=0and0,x=0$ and $h(x)=e_{∣x∣}$ for all $x∈R$. Let $(foh)(x)$ denote $f(h(x))and(hof)(x)$ denote $h(f(x))$. Then which of thx!=0 and e following is (are) true?