A) \[\frac{r}{mn}\] done clear
B) \[\frac{mn}{r+1}\] done clear
C) \[\frac{mn}{r}\] done clear
D) \[\frac{mn}{r-1}\] done clear
View Solution play_arrowA) 7 done clear
B) 6 done clear
C) \[-6\] done clear
D) \[-7\] done clear
View Solution play_arrowA) \[5\frac{1}{5}\] done clear
B) \[3\frac{1}{5}\] done clear
C) 1/10 done clear
D) 10 done clear
View Solution play_arrowA) \[{{a}_{1}}{{a}_{n}}\] done clear
B) \[n{{a}_{1}}{{a}_{n}}\] done clear
C) \[(n-1){{a}_{1}}{{a}_{n}}\] done clear
D) None of these done clear
View Solution play_arrowA) \[\log (x-z)\] done clear
B) \[2\log (x-z)\] done clear
C) \[3\log (x-z)\] done clear
D) \[4\log (x-z)\] done clear
View Solution play_arrowA) 1/89 done clear
B) 1/85 done clear
C) 1/80 done clear
D) 1/79 done clear
View Solution play_arrowA) 1/19 done clear
B) 1/29 done clear
C) 1/17 done clear
D) 1/27 done clear
View Solution play_arrowA) Greater than or equal to 10 done clear
B) Less than or equal to 10 done clear
C) Only equal to 10 done clear
D) None of these done clear
View Solution play_arrowquestion_answer9) If \[a,\ b,\ c,\ d\] are in H.P., then \[ab+bc+cd\] is equal to
A) \[3ad\] done clear
B) \[(a+b)(c+d)\] done clear
C) \[3ac\] done clear
D) None of these done clear
View Solution play_arrowA) 16 done clear
B) 14 done clear
C) \[\frac{27}{14}\] done clear
D) \[\frac{56}{15}\] done clear
View Solution play_arrowA) \[\frac{1}{37}\] done clear
B) \[\frac{1}{41}\] done clear
C) \[\frac{1}{45}\] done clear
D) \[\frac{1}{49}\] done clear
View Solution play_arrowA) \[\frac{1}{28}\] done clear
B) \[\frac{1}{39}\] done clear
C) \[\frac{1}{6}\] done clear
D) \[\frac{1}{17}\] done clear
View Solution play_arrowA) 0 done clear
B) 1 done clear
C) pq done clear
D) \[pq(p+q)\] done clear
View Solution play_arrowA) \[\frac{1}{6}\] done clear
B) \[\frac{3}{7}\] done clear
C) \[\frac{1}{7}\] done clear
D) \[\frac{3}{5}\] done clear
View Solution play_arrowA) 2 done clear
B) \[\frac{pq}{p+q}\] done clear
C) \[\frac{p+q}{pq}\] done clear
D) None of these done clear
View Solution play_arrowA) \[a+b\] done clear
B) \[ab\] done clear
C) \[\frac{1}{a}+\frac{1}{b}\] done clear
D) \[\frac{1}{a}-\frac{1}{b}\] done clear
View Solution play_arrowquestion_answer17) H.M. between the roots of the equation \[{{x}^{2}}-10x+11=0\] is [MP PET 1995]
A) \[\frac{1}{5}\] done clear
B) \[\frac{5}{21}\] done clear
C) \[\frac{21}{20}\] done clear
D) \[\frac{11}{5}\] done clear
View Solution play_arrowA) \[\frac{a}{\sqrt{1-{{a}^{2}}{{b}^{2}}}}\] done clear
B) \[\frac{a}{1-{{a}^{2}}{{b}^{2}}}\] done clear
C) \[a\] done clear
D) \[\frac{1}{1-{{a}^{2}}{{b}^{2}}}\] done clear
View Solution play_arrowquestion_answer19) The sixth H.M. between 3 and \[\frac{6}{13}\] is [RPET 1996]
A) \[\frac{63}{120}\] done clear
B) \[\frac{63}{12}\] done clear
C) \[\frac{126}{105}\] done clear
D) \[\frac{120}{63}\] done clear
View Solution play_arrowA) 1 done clear
B) \[-1\] done clear
C) 0 done clear
D) 2 done clear
View Solution play_arrowA) 4 done clear
B) 2 done clear
C) 1 done clear
D) \[a+b\] done clear
View Solution play_arrowquestion_answer22) If \[a,\ b,\ c\] be in H.P., then
A) \[{{a}^{2}}+{{c}^{2}}>{{b}^{2}}\] done clear
B) \[{{a}^{2}}+{{b}^{2}}>2{{c}^{2}}\] done clear
C) \[{{a}^{2}}+{{c}^{2}}>2{{b}^{2}}\] done clear
D) \[{{a}^{2}}+{{b}^{2}}>{{c}^{2}}\] done clear
View Solution play_arrowquestion_answer23) If \[a,\ b,\ c,\ d\] are in H.P., then [RPET 1991]
A) \[a+d>b+c\] done clear
B) \[ad>bc\] done clear
C) Both (a) and (b) done clear
D) None of these done clear
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